Full list of topics

Magnetics

Magnetic NDE Methods (Slides) Glenn A. Washer (January 2004) View the slides from Glenn A. Washer's lecture on Magnetic NDE methods from the TRB Conference held in January in washington DC, USA. Source: TRB Conference, Washington DC

GROUND PENETRATING RADAR (Slides) Professor Michael C Forde (February 2004) Radar uses an electromagntic signal and was first applied by Huelsmeyer to detect terrestial metal objects in 1904 (Ulricksen, 1982). In 1910 Leimbach and Loewy registered a German patent for the same purpose. Pulsed Ground Penetrating Radar (GPR) was used in the lunar landings of the 1970s and geophysical applications grew from that period for identifying relatively deep features such as strata changes (McCann et al, 1988) and more recently environmental features such as contaminants or buried gas tanks and pipes in "brownfield" site surveys. Source: TRB Conference Washington DC

GROUND PENETRATING RADAR (Paper) Professor Michael C Forde (February 2004) Radar uses an electromagntic signal and was first applied by Huelsmeyer to detect terrestial metal objects in 1904 (Ulricksen, 1982). In 1910 Leimbach and Loewy registered a German patent for the same purpose. Pulsed Ground Penetrating Radar (GPR) was used in the lunar landings of the 1970s and geophysical applications grew from that period for identifying relatively deep features such as strata changes (McCann et al, 1988) and more recently environmental features such as contaminants or buried gas tanks and pipes in "brownfield" site surveys. Source: TRB Conference, Washington DC

Visula Inspection of Highway Bridges (Presentation) Brent M Phares (January 2004) The Visual Inspection (VI) method is by far the most common form of nondestructive evaluation(NDE) used to satisfy the NBIS. Further, the VI method serves as a baseline by which many other NDE techniques can be compared. VI of highway bridges is considered to be an essential aspect of maintaining the nation’s deteriorating infrastructure. Source: TRB Conference, Washington DC

Visual Inspection of Highway Bridges (Paper) Brent M Phares (January 2004) The Visual Inspection (VI) method is by far the most common form of nondestructive evaluation(NDE) used to satisfy the NBIS. Further, the VI method serves as a baseline by which many other NDE techniques can be compared. VI of highway bridges is considered to be an essential aspect of maintaining the nation’s deteriorating infrastructure. Source: TRB Conference, Washington DC

IEEE Magnetics Society Newsletter IEEE (October 2002) Volume 40. Number 4. Source:

Static Electric and Magnetic Fields and Human Health Medical College of Wisconsin (February 2003) This Medical College of Wisconsin document reviews the laboratory and epidemiological evidence relevant to the issue of whether static (direct current, DC) magnetic or electric fields cause or contribute to cancer (or any other health problems) in humans. An updated version of this resource has been published on the web. Source:

The mysteries of the Earth's magnetic field and sunspots (March 2002) Slides from the presentation Source:

The mysteries of the Earth's magnetic field and sunspots A de Paor, National University of Ireland, Dublin (March 2002) The current view as to the origins of magnetic phenomena at the Earth's surface is that self-excited dynamo action in swirling fluids is responsible, an aspect of Geodynamo Theory. A problem remained in finding a self-consistent theory. In the midst of a bout of 'flu the author had a overwhelmingly clear, technicolour animated vision of electromagnetic processes in the Earth's core which apparently resolved this problem, as well as explaining the optical and magnetic cycling of sunspots. Source: IEE Kelvin Lecture, March 2002

Have null will fly M Crossfield, Scientific Generics Ltd (January 2001) Magnetics can bridge the cost-functionality gap in tagging technologies. Source: IEE Review January 2001

What is a permanent magnet? [slides] G Jewell, University of Sheffield (June 2000) The characteristics, terminology, and properties of permanent magnetic materials are described. Different permanent magnetic materials are then compared and demagnetisation is considered. Finally, the effects of rotor magnet loss are summarised. Source: IEE Seminar on Permanent Magnet Materials, London, July 2000.

Permanent magnet drives and materials, Fundamentals, design and applications - 4 July 2000 - Flashpoint (July 2001) The reported highlights of the event.

Microwave Generation

Low Cost MMICs for Automotive Radar And Passive Radiometric Imaging Applications Markus Behet (November 2006) TriQuint Source: Seminar on MM-wave products and technologies

Simulation Technology for Efficient Millimeter-Wave IC Development Stephen Maas (November 2006) Applied Wave Research, Inc. Source: Seminar on MM-wave products and technologies

PACKAGING AND MMIC DESIGN FOR LOW COST MM-WAVE MODULES Jeff Powell (November 2006) QinetiQ Source: Seminar on MM-wave products and technologies

Millimetre-Wave People Screening: Active and Passive Approaches Rory Doyle (November 2006) Smiths Detection Source: Seminar on MM-wave products and technologies

Hand held millimetre wave scanner David Daniels (November 2006) ERA Technology Source:

In Production Mm-wave chipsets for Long Range Radar at 77 GHz Pierre Quentin (November 2006) MMIC Solutions for Automotive Radars : From Current Production Toward Large Volume Production Source: Seminar on MM-wave products and technologies

Silicon-Based UWB Radar Sensor Chipsets Ian Gresham (November 2006) Design, Development and Production Source: Seminar on MM-wave products and technologies

High Performance MM-Wave Radar Techniques Duncan A. Robertson (November 2006) St Andrews Source: Seminar on MM-wave products and technologies

Integrated heterodyne receivers for MM and subMM atmospheric remote sensing Bertrand Thomas, P. Huggard, B. Alderman, B. Moyna, M. Oldfield, B. Ellison, D. Matheson (November 2006) MM and subMM atmospheric remote sensing can give unique insights in the dynamics of the atmosphere. Source: Seminar on MM-wave products and technologies

Design considerations for a millimetric front end for FMCW radar G. D. Morgan, P. D. L. Beasley, C. L. Murray, C. Koh (November 2006) QinetiQ Source: Seminar on MM-wave products and technologies

Low Cost Implementation of an ACC Automotive Radar M. J. Basten - CEng, FIET, BSc (Hons) (November 2006) Chief Engineer ACC Radar Products Source: Seminar on MM-wave products and technologies

Calibration of Active Phased Array Antennas Radar, Sonar & Navigation Professional Network (March 2005) This event took place on Tuesday, 8 March 2005 at The IEE, Savoy Place and was organised by the IEE Radar, Sonar and Navigation Professional Network. This event addressed aspects of ongoing research in the area of active phased array antennas due to them becoming affordable for wide range of radar and communication applications, Source: Active Phased Array Event

Shockwave-driven flux compression B M Novac, I R Smith & S E Goh, Loughborough University (October 2002) This paper presents findings from a research programme during which a cylindrical electric gun produced imploding shock waves through aluminium powder. As the shock wave converts the initially insulating aluminium powder into a metallic conductor, a magnetic field established by an outer coil is compressed to give a rapidly increasing flux density on the central axis. The underlying phenomena are analysed. Source: European Pulsed Power Symposium 2002, 22-24 October 2002

Military Communications

Calibration of Active Phased Array Antennas Radar, Sonar & Navigation Professional Network (March 2005) This event took place on Tuesday, 8 March 2005 at The IEE, Savoy Place and was organised by the IEE Radar, Sonar and Navigation Professional Network. This event addressed aspects of ongoing research in the area of active phased array antennas due to them becoming affordable for wide range of radar and communication applications, Source: Active Phased Array Event

Ministry of Defence Information Sheet on Personal Communications Systems P Kerstein et al, UCL (November 2002) This is one of a number of Information Sheets on emerging technologies that are of importance to defence, produced by a panel of the UK's leading experts. Source: Ministry of Defence

Modelling Asynchronous Transfer Mode (ATM) Traffic Over The Satellite Bearer M D Otter, C J Moss and R A Dow, BAE Systems (July 2001) This paper reports on work to investigate the performance of ATM over satellite links which was undertaken as part of a Pathfinder contract between DERA and BAE Systems. Of particular interest have been the effects of errors on data throughput including error extension from the failure of Forward Error Correction (FEC) or encryption, and errors from jamming. Source: IEE Colloquium on Military Satellite Communications, London, June 2000.

Making the best use of the airways: an important requirement for military communications M Williams, DERA (March 2000) When an armed force is deployed, frequencies must be assigned in a short time-scale to hundreds of radios so as to minimise the interference between them. This is an example of a combinatorial optimisation problem. This paper discusses some of the methods which can be used for solving such problems and presents results for a hybrid assignment algorithm developed at DERA-Malvern. Source: Electronics & Communication Engineering Journal April 2000. Crown Copyright

Mobile Communication Antennas

MIMO- Demonstration of Virtual MIMO in the Uplink V Jungnickel et al (October 2007) OFDM-based multiuser detection Remote synchronization: Frequency advance Experimental system System integration and performance Demonstration of virtual MIMO Conclusions Source:

MIMO- Signal Detection F-Zheng et al (October 2007) STBC for co-located antennas Distributed STBC D-STBC under imperfect synch D-STBC under imperfect synch Source:

MIMO- MultiuserSpatial Multiplexing Techniques S Lambotharan (October 2007) Spatial Diversity Max-Ratio Transmitter or Transmit Beamformer Multi User Beamformer Robust Multi User Beamformer Source:

MIMO- Cooperative Wireless Networks K Leung (October 2007) International Technology Alliance Motivation for ad-hoc networks with cooperative transmission Assumptions to simplify performance analysis Source:

MIMO- MEMBRANE Project Part 1 K Leung et al (October 2007) Why MEMBRANE is Needed Objective of MEMBRANE: IST-MEMBRANE Source:

MIMO- Reduced Feedback Opportunistic and Layered Random Beamforming C Han et al (October 2007) Introduction Feedback Reduction Schemes for opportunistic and layered random beamforming Numerical and Simulation Results Conclusions and Future Work Source:

MIMO- Precoding in MC-CDMA Downlink Systems C Tsimenidis (October 2007) Receiver-based Optimization Transmitter-based Optimization Joint Transmitter-Receiver Optimization Downlink MC-CDMA Transmitter Model Source:

MIMO- Distributed Cyclic Delay Diversity L Guerrero et al (October 2007) Introduction Frequency Domain Nakagami-mFading Model CDD MC-CDMA System Model SER Analysis Throughput-maximising resource allocation strategies Numerical & Simulation Results Conclusions Source:

MIMO- Wireless Relays J Laneman (October 2007) Judicious Design of Relay Networks Dynamical Spectrum-Efficient Routing (DSER) From Multihop Transmission to Cooperation Diversity-Multiplexing Tradeoff Source:

MIMO- Concurrent Decode and Forward Relaying C Wang et al (October 2007) Classic Cooperative Diversity Concurrent Decode-and-Forward Relaying Simulation Results Conclusions Source:

MIMO: Communication Systems from Concept to Implementation (December 2001) This event addressed the recent technical evolutions in Smart Antenna technology employing dual array architectures rather than conventional single array deployments. It also covered the fundamentals of capacity enhancement by means of MIMO based systems, advances in space-time coding as well as practical issues of system design. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Information-theoretical background of smart antennas Ali S Dakdouki et al (March 2004) Wireless networks are witnessing rapid advances in volume, range and cost of services. In parallel to the wireless development the evolution of the Internet has taken place. The widespread success of the mobile Internet will probably not depend on one kind of technology but on multiple technologies, including new capabilities of antenna arrays. To achieve pervasive, broadband communications require new radio communication services and also improvements in the efficiency of current systems. Smart antennas extract more capacity from current/future wireless network resources and their implementation at least at base stations (BSs) results in a more efficient network. Source: Communications Engineer, April 2004 - online

Mobile phone conformance I Poole (December 2003) Ensuring that cellular handsets comply with existing standards can be a daunting undertaking. But what exactly do manufacturers need to test in order to keep operators and users happy? Source: Communications Engineer, December 2003

Antennas - Smaller and Smarter Peter Hall (March 2003) Antennas are getting smaller and smarter to meet the needs of new communication systems, by integrating active devices and by novel multi-band and multi-pattern configurations. Professor Peter Hall attempts to provide an answer to the question; will terminal antennas get any smaller? View the slides from this IEE lecture held on 7 March 2003. Source: IEE Lecture

Dielectric antennas make waves R Dettmer (February 2003) Building antennas from dielectrics sounds like a contradiction in terms. But if you get the technology right, then the benefits can be considerable. Source: IEE Review, February 2003

Small GPS antennas for positioning personal wireless mobility devices O P Leisten & A Wingfield, Sarantel Limited (September 2002) Sarantel has been researching a dielectric-loaded quadrifilar antenna technology which takes control of the resonant near-fields through the use of a high-dielectric core and also a feed topology that isolates the antenna from handset-ground. This paper shares evidence that this strategy makes the electrical performance of the antenna predictable, and thus in-use performance can be better than the conventional (antenna-is-as-big-as-the-box) proposition. Source: IEE Seminar on Location Based Services, 16 September 2002

Numerical analysis of bodyworn UHF antenna systems W G Scanlon and N E Evans, University of Ulster (March 2001) Bodyworn antennas are found in a wide range of medical, military and personal communication applications. At UHF and microwave frequencies, bodyworn antennas can suffer from reduced efficiency due to electromagnetic absorption in tissue, radiation pattern fragmentation and variations in feed-point impedance. This paper describes how finite-difference time-domain modelling techniques can be used in the design of bodyworn antennas in the context of biomedical signalling and wireless personal-area networking applications. Source: Electronics & Communication Engineering Journal April 2001

Adaptive cell sizing in cellular networks A G Spilling, A R Nix, and M A Beach, Centre for Communication Research, University of Bristol (January 2000) Investigates the potential capacity improvements made possible through the use of dynamic cell sizing in a cellular network. The purpose of dynamic cell sizing is to reduce cell radii and thus enable in-cell users to increase their transmit powers. The use of higher transmit powers suppresses intercell interference and leads to an overall increase in capacity. This paper discusses the degree of capacity enhancement that can be achieved in this manner. The analysis indicates that the capacity of a single cell can be increased by as much as 38%. Dynamic cell sizing performs significantly better in hot-spot conditions, where the in-cell traffic follows a normal distribution with the highest density close to a central basestation. Source: Paper from IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

Planning and optimisation of smart antenna base stations in 3G networks A M Vernon, M A Beach and J P McGeehan, Centre for Communications Research, University of Bristol (January 2000) Rollout of UMTS networks and services, in Europe and elsewhere, will shortly commence. Mobile industry commentators have predicted many changes in business practises, service requirements and user expectations as a result of the advent of third generation networks. Significantly, the guidelines and procedures used to plan, establish and evolve second generation networks are unlikely to be applicable to sophisticated W-CDMA systems. Operators may choose to replace sector antennas for switched beam units on some sites where traffic demand is expected to be very high. The ?smart sectorisation? of a site?s coverage area afforded by this type of smart antenna product can be used to enhance capacity by reducing overall interference levels. This is a kind of SFIR (Spatial Filtering for Interference Reduction). Paper from IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000. Source: IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

DOA estimation using a relaxation based method A S Jahan and A H Aghvami, Kings College, University of London (January 2000) A modified relaxation-based method is employed to minimise the Maximum Likelihood function in the estimation of the DOA of signals impinging on an antenna array. The method is suitable for estimating DOAs of coherent signals and in the case where the number of snapshots is limited. Simulation results are used to demonstrate the performance of the relaxation-based method relative to that of other methods. Source: IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

Space-time estimation techniques for UTRA system N Hew and N Zein, Lancaster University (May 2001) The paper covers the space-time channel estimation techniques in a multiple-access communication receiver system that receives coded digital data modulated using DS-CDMA, with an antenna array in a multipaths propagation environment. A spatial and temporal channel model has been implemented, which is built upon the understanding of multipath fading and Doppler spread with merging time delay spread, direction-of-arrival and adaptive antenna array geometry. A receiver structure based on space-time processing has also been implemented, i.e. a reverse link, single-user (SU) with single antenna input (SI) at mobile and multiple antenna output (MO) at the base (SU-SIMO). A reverse link, multiuser (MU) ? SIMO has also been presented. A brief overview of various methods available for estimation of DOA of a radio signal using an antenna array is given. IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000. Source: IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

Smart antennas for UTRA TTD base stations S W Wales, Roke Manor Research Ltd (May 2001) The UMTS Terrestrial Radio Access (UTRA) comprises two modes of operation, distinguished by the duplex technique used. The FDD mode is suitable for paired 5MHz frequency bands, whereas the TDD mode is suitable for unpaired 5MHz frequency bands. Both paired and unpaired bands exist in the frequency region intended for 3G mobile radio at around 2GHz. The TDD mode employs both time division and code division multiple access, and shares many common features with the FDD mode. The two modes are intended to be complimentary in their application; whilst the FDD mode is primarily intended for macro-cell and micro-cell applications, the TDD mode is primarily intended for micro-cell and pico-cell applications. In this paper the use of smart antennas at the base station is examined as a means of increasing the capacity of the UTRA TDD system. Source: Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

Space-time coding for capacity enhancement in future-generation wireless communications networks D D N Bevan, R Tanner and C R Ward, Nortel Networks (January 2000) Presents a simple yet novel STC approach, based on a logical extension of simple convolutional codes. We compare this STC scheme with known transmission techniques, including Space-Time Transmit Diversity (STTD) and BLAST, in terms of code construction and performance. We present simulation results of actual performance, and discuss the reasons for, and implications of, the performance trends observed. Source: IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000

MIMO

MIMO- Demonstration of Virtual MIMO in the Uplink V Jungnickel et al (October 2007) OFDM-based multiuser detection Remote synchronization: Frequency advance Experimental system System integration and performance Demonstration of virtual MIMO Conclusions Source:

MIMO- Signal Detection F-Zheng et al (October 2007) STBC for co-located antennas Distributed STBC D-STBC under imperfect synch D-STBC under imperfect synch Source:

MIMO- MultiuserSpatial Multiplexing Techniques S Lambotharan (October 2007) Spatial Diversity Max-Ratio Transmitter or Transmit Beamformer Multi User Beamformer Robust Multi User Beamformer Source:

MIMO- Cooperative Wireless Networks K Leung (October 2007) International Technology Alliance Motivation for ad-hoc networks with cooperative transmission Assumptions to simplify performance analysis Source:

MIMO- MEMBRANE Project Part 1 K Leung et al (October 2007) Why MEMBRANE is Needed Objective of MEMBRANE: IST-MEMBRANE Source:

MIMO- Reduced Feedback Opportunistic and Layered Random Beamforming C Han et al (October 2007) Introduction Feedback Reduction Schemes for opportunistic and layered random beamforming Numerical and Simulation Results Conclusions and Future Work Source:

MIMO- Precoding in MC-CDMA Downlink Systems C Tsimenidis (October 2007) Receiver-based Optimization Transmitter-based Optimization Joint Transmitter-Receiver Optimization Downlink MC-CDMA Transmitter Model Source:

MIMO- Distributed Cyclic Delay Diversity L Guerrero et al (October 2007) Introduction Frequency Domain Nakagami-mFading Model CDD MC-CDMA System Model SER Analysis Throughput-maximising resource allocation strategies Numerical & Simulation Results Conclusions Source:

MIMO- Wireless Relays J Laneman (October 2007) Judicious Design of Relay Networks Dynamical Spectrum-Efficient Routing (DSER) From Multihop Transmission to Cooperation Diversity-Multiplexing Tradeoff Source:

MIMO- Concurrent Decode and Forward Relaying C Wang et al (October 2007) Classic Cooperative Diversity Concurrent Decode-and-Forward Relaying Simulation Results Conclusions Source:

Performance of Space Time Coding in Subway Tunnel Environments L Castedo-Ribas, University of Coruna, Spain, et al. (December 2001) Multipath channels are typically encountered in subway environments since radio propagation is severly affected by numerous reflections on the walls and ceilings of tunnels and stations. This paper investifates how to increase the capacity of GSM radio interfaces in subway tunnel environmnets by means of antenna arrays and space time coding techniques. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Eigenvalue and Inverse Eigenvalue Statistics for Rayleigh and Rician MIMO Channels E Jorswieck, Heinrich Hertz-Institut for Nachrichtentechnik, Germany, et al. (December 2001) MIMO systems capacity is computed by evaluating the eigenvalue statistics of measured MIMO channel matrices. This paper reviews tools for computing the empirical distribution function for the eigenvalues and present new results for the inverse eigenvalues for Rayleigh and Ricean MIMO channel matrices using the Stieltjes transform. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

MIMO Measurement for Double Directional Channel Modelling R Thomä, Technishe Universitat llmenau, Germany, et al. (December 2001) The paper describes a multidimensional MIMO channel sounder, and shows various measurement results including first measurements between two mobile platforms carrying uniform circular arrays with 360° azimuth coverage at both sides. This can be seen as representation of an adhoc radio link between two cars moving in a road traffic scenario. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Performance assessment of Polynomial Expansion Detectors in MIMO Channels L Cottatellucci & R Muller, FTW, Austria (December 2001) Performance results are provided of a MIMO receiver in terms of bit error rates and signal-to-interference ratios for communication over real-world MIMO channels. For more than 5 antennas, performance with measured data is close to the predictions found with the asymptotic random matrix models and only little behind the performance of far more complex receivers, such as the linear MMSE receiver Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Implementation of a Wideband Directional Channel Model for Link level Simulations L Ferreira, Technical University of Lisbon, Portugal, et al. (December 2001) The Wideband Directional Channel Model (WDCM), a semi-statistical model assessed with measurements, simulates signal propagation in a multipath environment, providing delay and direction of arriving signals. It implicitly simulates fading and considers the existence of path loss. This, along with aspects such as sampling time and angle resolution, stationary period length and signal variability between periods are addressed in this paper. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Effect on Capacity of Clustering in indoor MIMO Channels B Khatri, Philips, UK (December 2001) Published experimental results suggest that in NLOS indoor environments multipath rays arrive in clusters. Using Monte Carlo type simulations, comparisons are made between the MIMO capacity of Rayleigh matrix channels constructed using the clustering model. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

MIMO signal Description for Spatial- Variant Filter Generation N Lohse, Dresden University of Technology, Germany, et al. (December 2001) Modelling a MIMO channel using a matrix of kernel transfer functions "shows no way in which a spatial-variant filter affects input signal to produce output signals" as system theoretician Bello has stated. In order to describe a MIMO channel with spatially distributed antennas by a space-time filter, spatial system functions are introduced which are based on an analogy of bello's " physical-intuitive" systems functions. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Towards Less-than-one Reuse Factor: space-time MIMO TurboEqualizers System-Level Simulation Results T Matsumoto, NTT DoCoMo, Japan (December 2001) This paper focuses on link-and system-level performance if Space/Time MIMO Turbo Equalizers in real fields. Methodologies for the link-and system-level simulations using field measurements data are first presented, followd by simulation results. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Performance of Frequency-Space Techniques Over Measured Channels for MIMO-OFDM Systems R Piechoki, University of Bristol, UK, et al. (December 2001) This paper examines the performance of some recently proposed space-time coding and signal processing techniques when applied to Orthogonal Frquency Division Multiplexing (OFDM) in MIMO configuration. Performance results using statistical multi element channel models are compared with those using state-of-the-are MIMO channel measurements. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Impact of Partial Correlation in the Fading Channel on the performance of Multi Antenna Systems R Roberts, University of Surrey, UK, et al. (December 2001) In this paper, the impact of fading correlations on the error-rate performance of two multi-antenna systems is studied, and the possible reasons for the observations are explored, under a range of correlation levels capturing correlations at the transmit and receive ends. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

A Multi Channel Sounder Architecture for Spatial and MIMO Characterisation of the Mobile Radio Channel S Salous, UMIST, UK, et al. (December 2001) A dual band wideband channel chirp sounder was designed and implemented at UMIST. The sounder was used to characterise the Frequency Division Duplex (FDD) channels of the Third Generation (3G) mobile radio systems. The paper presents the architecture of the sounder and discusses the necessary design considerations. Preliminary results of the performance of the sounder are also presented. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Modelling of MIMO Channels for the Populated Indoor Environment W Scanlon & K Ziri-Castro, University of Ulster, N Ireland (December 2001) A new technique is presented for modelling the dynamic response of MIMO channels within populateed indoor enviroments. Moving human bodies introduce temporal variations due to wave blocking (absorption), scattering and diffraction. The model is based on geometrical optics and a detailed radar cross-section (RCS) representation of the human body. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Non Linear Detection for Space-time Systems Using and Orthogonal Triangularization Process by QR Decomposition M Siyau, Cranfield University, UK, et al. (December 2001) In this paper we propose a new non-linear symbol detection algorithm that uses an orthogonal triangularization method to reduce the complexity of the detection process. Results are presented for various system configurations and demonstrate the importance of rearranging the channel matrix, as compared to a random detection ordering. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

On the Optimality and Performance of Transmit and Receive Space Diversity in MIMO Channels W Wennstrom, Uppsala University, Sweden, et al. (December 2001) An expression for the probability that beamforming is the information theoretic optimal transmission strategy is derived assuming a multiple input, multiple output (MIMO) wireless communication system with perfect channel state information at the transmitter. The fading between pairs of transmit and receive antennas are modelled. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Broadband Vector Channel Sounder for MIMO Channel Measurement W Wirnitzer, Medav, Germany (December 2001) Best design of 3G and 4G mobile communication systems requires profoung knowledge of the radio channel, especially its timevariant characteristics in various radio environments. A precise characterisation of the radio channel is given by the vector channel impulse response (VCIR). In MIMO sytems the VCIR is measured for each transmitting antenna to a configured RX antenna array. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Performance Evaluation of a space-time MIMO Turbo Equalizer in Frequency Selective MIMO Channels Using Field Measurement Data T Abe, NTT DoCoMo, Japan, et al. (December 2001) Evaluating in-field performances of our proposed MIMO Turbo equalizer, soft Caneller (SC) followed by MMSE (SC/MMSE) Space-Time (S/T) MIMO Turbo Equalizer is the primary object of this paper. The SC/MMSE S/T MIMO Turbo Equalizer discussed in this paper performs joint MIMO channel estimation, SC/MMSE MIMO signal detection, and decoding of the channel code used, all in an iterative manner. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Multi-User Detection Applied to the GSM Standard M Chenu-Tourniery, Thales, France, et al. (December 2001) The authors perform MIMO communications on the existing GSM standard using multi-user diversity. This system is being tested for underground communications where up to 4 simultaneous GSM communications are performed and demodulated reliably at the receiver with a 5 element antenna. Simulated results with known and estimated channels are proposed. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Effect of Transmit and Receive Diversity on a High Data Rate Packet CDMA Wireless System A Dinnis & J S Thompson, University of Edingburgh, UK (December 2001) A model is developed which simulates a High Data Rate (HDR) network with multiple transmit and receive antennas. The model, which includes correlated shadowing and Rayleigh fading, generates results for throughput using proportional fairness scheduling. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

A MIMO WLAN Based on Linear Channel Inversion V Jungnickel, Heinrick-Hertz-Institut fur Nachritetchinik, Germany, et al. (December 2001) MIMO with Linear Channel Inversion (LCI) is a promising candidate for Wireless Local Area Network (WLAN) applications. Like VBLAST, LCI offers significantly better performance than ZF (Zero Forcing). In addition, LCI needs less signal processing than VBLAST when the number of data streams is large. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Joint Channel and Data Estimation for Asynchronous GSM Standard M Loncar, FTW Vienna, Austria, et al. (December 2001) Multiuser detection is a powerful tool to combat co-channel interference in multiple-access communication systems. In this paper, the authors investigate the feasibility of achieving increased spectral efficiency in GSM-like TDMA networkd by applying multiuser detection. Two special cases are considered. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Systems Level Evaluation of standard-compatible MIMO techniques for Downlink A Pollard, Vodafone, UK, et al. (December 2001) A number of novel methods have been proposed but this paper shows, at a system level, the performance advantage attainable from standard (3GPP UTRA) compatible transmit and receive diversity methods for the downlink. The gains for simple MIMO systems are derived. The simulation are undertaken using a realistic site distribution and traffic distribution. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

MIMO Techniques within UTRA TDD System S Wales, Roke Manor Research (UK) (December 2001) This paper examines two specific techniques applied to the downlink transmission within the UTRA TDD standard where multiple antennas are used at both transmitter and receiver. Simulation results are given for both techniques. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

Capacity of adaptive MIMO systems in a finite scattering channel A Burr, University of York (December 2001) The objective of this paper is to explore whether channel capacity increases without limit with the number of elements, or whether there is an inherent limit. To this end a model is consdiered, here called the finite scatters model, which explicitly models the mulitipath components, assuming that there are a finite number of such components. Source: IEE Seminar: MIMO - Communication Systems from Concept to Implementation, December 2001

MIMO model free frequency domain controller for active sound control T Meurers, S M Veres and C H Tan, University of Southampton (November 2001) In the late last century the interest in Active Sound Control (ASC) has grown tremendously. The physical principle and the engineering idea were already established for a long time. Even first implementations go back to 1953 but only the development of fast digital signal processing boards made ASC a feasible silencer method. Since then the number of publications per year concerned with active control techniques has well passed the mark of 1000. Source: Interactive 2001 ? Active Control of Sound and Vibration, November 2001

Space-time coding in the third generation and beyond A G Burr, University of York (January 2000) We consider space-time coding and other techniques which have recently been developed to take advantage of the substantial capacity increases which are available in multi-antenna, or MIMO (multiple-in, multiple-out) radio channels. We address the question of how and to what extent these techniques may be exploited in third generation mobile systems based on standards such as UMTS. We consider both the dependence of the capacity on the radio environment, and the requirements of signal design for these channels. We show that the standard may be adapted to provide both capacity gains and diversity improvements, but care must be taken to ensure backward compatibility with handsets not designed for these signals. Multi-user detection is also important to provide a good signal to noise ratio. Source: IEE Seminar - Capacity and range enhancement techniques for the third generation mobile communications and beyond. February 2000.

Mobile Communications

Get the balance right Dominic Lenton (February 2006) Chinese telecoms firms excel at product development, but do they have a research base to match? Source: IEE Review, February 2006

The IEE Wimax and Mesh Networks Forum Various (June 2005) View the presentations from The IEE Wimax and Mesh Networks Forum held on the 14-15 June 2005 at Savoy Place, London. Source: The IEE Wimax and Mesh Networks Forum

Telecoms Networks: The Next Generation Various (July 2005) View the presentations from the Telecoms Networks: The Next Generation event held on the 4th-5th July 2005. Source: Telecoms Networks: The Next Generation 2005

Review of the Workshop on Synchronization in Telecommunication Networks (June 2005) The workshop on sync - WSTS 05 - held in Boulder, Colorado in May highlighted a controversial divide in expert opinion in the specialised field of sync and timing in telecom networks. Source:

Telecommunications Hot Topics Forum Communications PN (November 2004) Presentations from speakers at The IEE Telecommunications Hot Topics Forum - Telecoms Networks The Next Generation, held from 9 - 10 November 2004 at The IEE Savoy Place, London. Source: Hot Topics Forum 2004

Services and Applications in Mobile Environment Dr Tijana Timotijevic (November 2004) View the Power Point presentations from Dr Tijana Timotijevic's paper presented at the Hot Topics Forum, November 2004. Source: Hot Topics Forum, November 2004

Intimate Interfaces: Communications Technologies Beyond Clamshell & Candybar Simon Jones, Managing Director, Media Lab Europe (November 2004) View the Power Point presentation from Simon Jones's paper presented at the Hot Topics Forum, November 2004. Source: Hot Topics Forum-November 2004

The latest developments in mobile technology Oliver Gunasekara, Global Director of Mobile, ARM (November 2004) View the Power Point presentation of Oliver Gunasekara's paper presented at the Hot Topics Forum in November 2004. Source: Hot Topics Forum, November 2004

Look Who's Talking Ian Germer, Orange (November 2004) View the Power Point Presentation from Ian Germer's paper presented at the Hot Topics Forum. Source: Hot Topics Forum- November 2004

Next Generation Networks Husam Awadalla (November 2004) View the Power Point presentation of Husam Awadalla's paper presented at the Communications Hot Topic Forum in November 2004. Source: Communications Hot Topics Forum- November 2004

Push to Talk- an overview of the past, present and Future Steve Griffin, PA Consulting Group (November 2004) This presentation considers: * Where Push-To-Talk (PTT) has come from and what all the excitement is about * Current Market and Technical options and issues * Strategic Questions moving forward and Keys to Success Source: IEE Annual Hot Topics Forum, November 2004

Coach potato (television on mobile phones) J Henriksson and P Talmola, Nokia (August 2004) The arrival of TV broadcasts on mobile phones moves a step closer with the development of the DVB-H (Digital Video Broadcasting - Handheld) standard. Source: Communications Engineer, August 2004

Advancing the messaging interface (mobile phone technology) Jeremy Curtis, Agere Systems (August 2004) Although AT commands played a key role in early GSM systems, today's handsets would be better off without them. Source: Communications Engineer, August 2004

Living with technophilia (Industry View) H Roberts, Logan-Orviss International (July 2004) We should think 'customer' and not so much 'technology' when developing telecom products and services, says Hugh Roberts Source: IEE Review, July 2004

3G killer apps everywhere T Ahonen (June 2004) A service is called a 'killer application' if that service alone is sufficiently compelling to persuade someone to buy a device or a subscription. Killer applications are not necessarily the biggest revenue earners, but are new services that would compel a customer to get a new handset or sign up with a new operator. This article looks at a variety of 'killer apps' for 3G telecommunications networks. Source: Communications Engineer, June 2004

We mast do something about it S Harris (June 2004) Downward pressure on costs is creating technical and commercial challenges for manufacturers of basestations and basestation components. Source: Communications Engineer, June 2004

Is Europe set for 3G? J P Conti (June 2004) Europe is still citing problems in moving to 3G. Source: IEE Review, June 2004

Roaming from one G to another F Muhammad, Racal Instruments (March 2004) A look at the challenges surrounding the process of handover between 2G/2.5G and 3G mobile phone networks (Inter-RAT handover), and some of the solutions. Source: Communications Engineer, April 2004

Moving mobile telecommunications to the forefront L Collins (March 2004) Interview with Prof Joseph McGeehan, managing director of the Telecommunications Research Laboratory of Toshiba Research Europe Ltd (TREL). Source: Engineering Management, April/May 2004

Information-theoretical background of smart antennas Ali S Dakdouki et al (March 2004) Wireless networks are witnessing rapid advances in volume, range and cost of services. In parallel to the wireless development the evolution of the Internet has taken place. The widespread success of the mobile Internet will probably not depend on one kind of technology but on multiple technologies, including new capabilities of antenna arrays. To achieve pervasive, broadband communications require new radio communication services and also improvements in the efficiency of current systems. Smart antennas extract more capacity from current/future wireless network resources and their implementation at least at base stations (BSs) results in a more efficient network. Source: Communications Engineer, April 2004 - online

Welcome to Europe J P Conti (February 2004) This article looks at the growth of the i-mode mobile internet service, pioneered in Japan by the mobile phone operator NTT DoCoMo, and launched in Europe in 2002. Source: Communications Engineer, February 2004

Mobile phone conformance I Poole (December 2003) Ensuring that cellular handsets comply with existing standards can be a daunting undertaking. But what exactly do manufacturers need to test in order to keep operators and users happy? Source: Communications Engineer, December 2003

Microsoft and the mobile C Evans-Pughe (March 2003) Discusses Microsoft's entry into the market for mobile phone software with its Smartphone 2002 operating system. Source: IEE Review April 2003

Changing the Wireless World One Year On Professor Michael Walker, Vodafone Group R&D Director, Royal Holloway, University of London (March 2003) Vodafone's latest developments from their top person in R&D. This follows on from an excellent IEE Berkshire Branch lecture last year. Source: IEE Berkshire Branch Lecture, Newbury RFC Conference Centre, 06 March 2003

Designing under pressure C Evans-Pughe (February 2003) Despite healthy high street sales, extreme competition in consumer electronics has made risk reduction the new design mantra. Source: IEE Review, February 2003

China goes solo C Edwards (February 2003) Wireless equipment makers are watching China to see if a new standard for the third generation of mobile phones will take to the air. Source: IEE Review, February 2003

Learning from i-mode G Vincent, mTank (October 2001) How can we make a commercial success of next generation cellular networks and the wired Internet? Geoff Vincent points to some valuable lessons from the Japanese i-mode experience. Amid all the hype and uncertainty surrounding the ?mobile Internet?, there is one undeniable success story: NTT DoCoMo?s i-mode service in Japan. Source: IEE Review November 2001

GSM over Ethernet R Dettmer (February 2002) A report on how a UK company ? with a little help from Category 5 cabling?is helping to realise the commercial potential of the GSM pico base station. Source: IEE Review March 2002

Future power sources for mobile communications K Green and J C Wilson, DERA (January 2001) Within the next few years improvements in lithium ion batteries?the preferred battery type for mobile communications?will plateau as limits on the cell chemistry are approached. Fuel cells offer a route to better performance, possibly using hydrogen fuel stored in carbon nanofibres or methanol. Electrochemical double layer capacitors can provide power to meet transient surges in the electrical load. Source: Electronics & Communication Engineering Journal February 2001

A vision of UMTS/IMT-2000 evolution H Aghvami and B Jafarian, Wireless Facilities Inc (June 2000) A vision is presented for a fully IP-based mobile network which goes beyond UMTS/IMT-2000. A top-to-bottom design approach is introduced that is capable of offering new and innovative services and applications to both fixed and mobile users efficiently, cost effectively and in a user-friendly manner. Some issues and examples in the design steps following this new approach are discussed. It is clearly shown that the convergence of mobile and fixed networks will be achieved naturally through the use of an ?All IP? based solution for both access andcore networks. Source: Electronics & Communication Engineering Journal June 2000

Multimedia Applications

Search party (service providers and broadband) Simon Waddington, Motorola Labs (August 2004) This article describes the EC-funded BUSMAN (bringing user satisfaction to media access networks) project, aimed at developing a user-friendly search and retrieval interface for mobile video content. Source: Communications Engineer, August 2004

Picoplatters L Collins (March 2004) Miniature hard disk drives are transforming the capabilities of a host of consumer products. Source: IEE Review, April 2004

Smart house prices fall D Ross (March 2003) The promise of digital content from any source, in any room, at the flick of a switch is now a reality. But will consumers connect with it? Report from the CeBIT consumer electronics show in Hannover, Germany. Source: IEE Review April 2003

Implementing MPEG- 4 Visual in software [slides] Y Zhao, L Muir and I Richardson, Robert Gordon University Aberdeen (April 2002) Two applications of MPEG-4 are considered: first, variable complexity video coding, for a PC- based system with multi-application and consequent competion for resources, or an embedded processor or DSP such as you would find in a handheld platform; and second, video coding optimization for sign language users in a videotelephony system. Results and suggestions for future work in both applications are presented. Source: IEE Seminar on Visual media standards for today and tomorrow, 25 April 2002

Semiconductor IP accelerator cores for ultra low power MPEG-4 video decode in systems-on-silicon J Dunlop et al., Amphion Semiconductor (April 2002) An ultra-low-power, hardware-accelerated architecture based semiconductor intellectual-property (SIP) core for MPEG-4 simple profile video decoder has been developed. This core is ideally suited for applications in 3G terminals, smartphones, and multimedia PDAs due to its small size and flexibility. The core can provide motion picture quality video at up to CIF resolution. The core dissipates the least power – approximately 10-milliwatts – when compared with competing MPEG-4 video decoder implementations. Source: IEE Seminar on Visual media standards for today and tomorrow, 25 April 2002

Low bandwidth Internet streaming of multimedia lectures A C M Fong, Massey University & S C Hui, Nanyang Technological University (December 2001) An end-to-end solution for streaming lectures over the Internet is proposed. The technical issues involved are first discussed and the importance of application-layer QoS control emphasised. A hybrid architecture that uses an exchange server to handle communications is then proposed. In this architecture video/audio data are transferred directly between the streaming servers and clients. Source: Engineering Science And Education Journal, December 2001

Web-based intelligent surveillance system for detection of criminal activities A C M Fong, Massey University & S C Hui, Nanyang Technological University (December 2001) With the declining cost of computing power and widespread acceptance of the Internet as a viable communication medium, a low-cost and effective Web-based surveillance system becomes an attractive alternative to conventional systems. This article describes the technological issues involved in implementing such a Web-based system. Source: Computing & Control Engineering Journal, December 2001

Unlocking the potential of new media and entertainment content [slides] P Langsdale, BBC Technology (December 2001) The key to unlocking the value of potent new technologies such as 3G will be how we manage content; the systems we use to collect, archive and deliver it; and matching rights to the appropriate platforms and billing systems. Only businesses with the right systems in place will stand a chance of getting a return on their investment. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001.

Unlocking the potential of new media and entertainment content P Langsdale, BBC Technology (December 2001) The key to unlocking the value of potent new technologies such as 3G will be how we manage content; the systems we use to collect, archive and deliver it; and matching rights to the appropriate platforms and billing systems. Only businesses with the right systems in place will stand a chance of getting a return on their investment. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001.

A vision for the Fourth Generation H Aghvami, King?s College London (December 2001) SInce it took nearly ten years from defining the concept to deploying 3G systems, it is now time to start developing the fourth generation of mobile system. The talk gives a vision for 4G, as "user driven and user controlled services". This vision can be achieved by convergence/integration/interworking of all networks including broadcast; simple to select and easy to use desired services using agent technology; and low cost universal terminals that use reconfigurable technology. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001.

A vision for the Fourth Generation H Aghvami, King?s College London (December 2001) Since it took nearly ten years from defining the concept to deploying 3G systems, it is now time to start developing the fourth generation of mobile system. The talk gives a vision for 4G, as "user driven and user controlled services". This vision can be achieved by convergence/integration/interworking of all networks including broadcast; simple to select and easy to use desired services using agent technology; and low cost universal terminals that use reconfigurable technology. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001.

A telco?s strategy for multimedia communications [slides] M Mehler, BTexact Technologies (December 2001) The last few years have seen unprecedented investment in broadband network infrastructure. The challenge now facing the industry is to develop the compelling applications that will enable the return on this investment to be realised. Multimedia applications are seen by many as the means of evolving from a business model based around voice call minutes to one of inherently higher value. This presentation examines the approaches being taken by the industry to meet this challenge and explores future scenarios. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001

A telco?s strategy for multimedia communications M Mehler, BTexact Technologies (December 2001) The last few years have seen unprecedented investment in broadband network infrastructure. The challenge now facing the industry is to develop the compelling applications that will enable the return on this investment to be realised. Multimedia applications are seen by many as the means of evolving from a business model based around voice call minutes to one of inherently higher value. This presentation examines the approaches being taken by the industry to meet this challenge and explores future scenarios. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001

An introduction to Video over IP for broadcast quality video distribution over cable networks [slides] I Bond, Cisco Systems (December 2001) The presentation introduces the use of IP to distribute video in cable networks. It describes the architecture for this delivery and the functional blocks required in the network. The features required of the network, such as quality of service capabilities and dynamic allocation of resources are explained. The mechanisms for video on demand and multicast delivery of video in a cable environment are covered. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001

An introduction to Video over IP for broadcast quality video distribution over cable networks I Bond, Cisco Systems (December 2001) The presentation introduces the use of IP to distribute video in cable networks. It describes the architecture for this delivery and the functional blocks required in the network. The features required of the network, such as quality of service capabilities and dynamic allocation of resources are explained. The mechanisms for video on demand and multicast delivery of video in a cable environment are covered. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001

Co-operation between Multimedia Networks: Results of the Isle of Man 3G/DAB Trial [slides] D Crawford, Crown Castle (December 2001) Low cost is a key requirement of new services from consumers who are conditioned by "free" Internet services, cheap voice telephony and free to air broadcasting. Cellular 3G systems will be capable of delivering many interactive and personalised services, but does not provide a low cost delivery mechanism for large quantities of data. Conversely broadcast systems can deliver large quantities of data at low cost, but with limited interactivity or personalisation. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001.

Multimedia delivery ? Is the Internet becoming a major obstacle to the deployment? [slides] E Gulfi, The Fantastic Corporation (December 2001) During the last decade the evolution of multimedia technologies has not been matched by a corresponding evolution of content delivery capabilities. While the Internet has greatly influenced the growth of the multimedia industry, it is also a major obstacle to the deployment of the next generation multimedia applications. The presentation provides an overview of different content delivery strategies and technologies, which promise to resolve this issue. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001

Content Opportunities in Streaming Media and Interactive TV [slides] B Dutson, VisionConsult International (December 2001) The streaming media industry has become a key potential market for broadcasters. The BBC's streaming audience size is growing by 100% every 4 months. Big Brother UK boasted 26 million streams over a  6 week period. VisionConsult forecasts European Interactive TV subscribers will more than triple by 2005. Interactive revenues will grow over this period by 15 times. Source: IEE MMC PN Launch event: Multimedia Communications in the 21st Century - Winners and Losers?, 10 Dec 2001