Technical articles A selection of technical papers and articles, relevant to your industry.
Amplifiers  | Current-feedback op-amps for high-speed I/O
L Siebert, National Semiconductor (June 2004)
Current-feedback op-amps provide a high-bandwith alternative to voltage feedback. But the design techniques and tricks needed are quite different.
Source: Electronics Systems and Software, June 2004 | | | Design of a high power solid state amplifier to replace TWTAs in airborne applications
D FitzPatrick, Milmega (December 2000)
As a result of its earlier interest in microwave tube amplifiers Milmega received a requirement specification for a travelling wave tube amplifier, (TWTA), for an airborne ECM application. The amplifier design requirements for an airborne electronic counter measures (ECM) application, and the solid state solution successfully provided by Milmega, are described.
Source: IEE Seminar on Microwave and RF Power Amplifiers, December 2000 | | | Amplifier design for high efficiency performance
A S Virdee & B S Virdee, Filtronic Components (December 2000)
This paper describes the design and performance of high efficiency power amplifiers at X-band using state-of-the-art power heterostructure FET (HFET) devices operating in Class AB/F. Conventional MIC technology was employed for practically realising the designs. The amplifiers exhibited power-added efficiencies significantly higher than conventional power devices.
Source: IEE Seminar on Microwave and RF Power Amplifiers, December 2000 | | | 130W C-Band pulsed power amplifier [wind speed measurement]
A Darbandi et al., Alcatel Space (December 2000)
Solid state power amplifiers (SSPA) have been used in radar applications for many years, the main advantages being: low distortion of amplitude and phase during the pulse, high reproducibility of identical pulses and high quality of output spectrum. The authors present the design and the measured results of a 130 W C-band SSPA used for the ASCAT instrument for wind speed measurement over the oceans.
Source: IEE Seminar on Microwave and RF Power Amplifiers, December 2000 | | | L Band power amplifier solutions for the INMARSAT space segment
D Seymour, ASTRIUM (December 2000)
The UK has long held a prominent position in the production of solid state power amplifiers (SSPA) for space-flight applications, and particularly so for the mobile sector in the L-Band (1550 MHz). The paper begins with a review of L-band power amplification employed on the INMARSAT series of satellites including both solid state and vacuum technology. The SSPA for INMARSAT's fourth generation satellite is then discussed.
Source: IEE Seminar on Microwave and RF Power Amplifiers, December 2000 |
Antennas and Propagation - General | | MIMO- Demonstration of Virtual MIMO in the Uplink
V Jungnickel et al (October 2007)
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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)
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STBC for co-located antennas -
Distributed STBC -
D-STBC under imperfect synch -
D-STBC under imperfect synch
Source: | | | MIMO- Cooperative Wireless Networks
K Leung (October 2007)
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International Technology Alliance -
Motivation for ad-hoc networks with cooperative transmission -
Assumptions to simplify performance analysis
Source: | | | MIMO- Distributed Cyclic Delay Diversity
L Guerrero et al (October 2007)
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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)
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Judicious Design of Relay Networks -
Dynamical Spectrum-Efficient Routing (DSER) -
From Multihop Transmission to Cooperation -
Diversity-Multiplexing Tradeoff
Source: | | | Planar Pifa Telematics Antennas
Prof Richard Langley (September 2005)
Head of the Communications Group, The University of Sheffield
Source: Wideband and Multi-band Antennas and Arrays | | | Printed Triband Terminal Antenna
Max Ammann (September 2005)
Senior Lecturer, Dublin Institute of Technology, Ireland
Source: Wideband and Multi-band Antennas and Arrays | | | Small Antennas for Personal Communicatons Devices
Dr Marta Martinez-Vazquez (September 2005)
The necessity of multi-standard mobile communications devices represents a challenge for antenna designers, as they have to implement integrated multi band elements within a volume that is rapidly shrinking. This paper shows some examples of multiband antenna solutions for this kind of application.
Source: Wideband and Multi-band Antennas and Arrays | | | Progress of multiband antenna technology in mobile phone industry
Zhinong Ying (September 2005)
In the 1990’s, the mobile phone industry experienced a dramatic development. The first stage was from analog standard to digital standard development, for example, analog standard such as AMPS (Advanced Mobile Phone System), NMT (Nordic Mobile Telephone) and ETACS; digital standard such as GSM, D-AMPS and CDMA. The second stage was from single band to multi-band due to the strong capacity requirements. DCS1800 and PCS1900 were introduced in the middle of 1990’s.
Source: Wideband and Multi-band Antennas and Arrays | | | IEE Appleton Lecture 2005
Peter Bury (January 2005)
Lecture given by Peter Bury at the 2005 Appleton Lecture on the 13th January.
Source: IEE Appleton Lecture 2005 |  | Antenna Centre of Excellence (ACE) - A Network for Improved Antenna Research
Per Ingvarson (October 2004)
The ACE Network is a Network of Excellence in the European 6th framework IST. It will structure the fragmented European antenna R&D, reduce duplications and boost excellence and competitiveness in key areas. The project started on 1 January 2004 and has a duration of two years. It has 45 participants from 13 European countries and 266 researchers and 96 PhD students are involved. The network is organised in four horizontal activities and in four vertical, application-oriented activities. Find out more about these activities here.
Source: Antenna Centre of Excellence (ACE) |
Automotive Antennas | | Novel millimeter acc antenna feed
D G Spencer, Dynex Semiconductor (March 2000)
The construction and performance of a novel microstrip-polyrod antenna feed is discussed and briefly compared to alternative microstrip feeds for dielectric lenses. This novel antenna feed, which was developed for a 77 GHz. automotive radar system, enables microstrip patch radiators to efficiently illuminate dielectric lenses or reflectors, and may also be applied to microstrip antenna arrays.
Source: IEE Seminar - Antennas for Automotive Applications. March 2000 | | | Active integrated antennas for automotive applications
M Kaleja and E Biebl, Technische Universität München (March 2000)
The demands of the fast growing market of wireless sensor and communication applications can only be satisfied by RF front-ends that offer a good value for both the manufacturer and the consumer with respect to price and complexity. The concept of active integrated antennas (AIAs) allows combination of innovative features such as compactness, low cost, low profile, and minimum power consumption. AIAs have been designed, fabricated, and used as low-cost front-ends for sensor applications in the frequency bands around 24, 61, and 76.5 GHz allocated for industrial and vehicular applications. Actual antenna designs are discussed and their usability for automotive applications is evaluated.
Source: IEE Seminar - Antennas for Automotive Applications. March 2000 | | | Active transponders for short-range communications between on-board units and roadside units
C Luxey, L Dussopt and J-M Laheurte, Université de Nice - Sophia Antipolis (March 2000)
An RF transponder allows contactless identification or communication in applications ranging from mountain/sea rescue to automatic waste management. Such a system is awaken by an interrogating signal and sends back a coded response. A potential application in Intelligent Transport Systems (ITS?s) concerns dedicated short-range communications (DSRC), in which information is exchanged between roadside units and on-board transponders. The European prestandard defining the framework for DSRC recommends a 5.8 GHz carrier frequency within a 10 MHz band. Since the communication distance extends from a few meters (vehicle tolling applications) to several tens of meters (traffic information), a small primary battery must be inserted in the transponder. This paper presents two transponders suitable for this specific application, both based on the locking of a local oscillator by a pure interrogating RF frequency.
Source: IEE Seminar - Antennas for Automotive Applications. March 2000 | | | Optically transparent microstrip antennas
C Mias, C Tsakonas, N. Prountzos et al, Nottingham Trent University (March 2000)
Optically transparent antennas have potential applications as receivers/transmitters for wireless automotive applications. They can be incorporated in the car?s window or light panels thus preserving car aesthetics. These antennas could also be incorporated in the displays of wireless communications electronic equipment.This paper describes a feasibility study carried out on the performance of antennas made from different transparent conductors. These antennas are compared to conventional copper-based antennas and an antenna made from (non-transparent) thin film aluminium. The antenna type chosen was that of a microstrip dipole on a glass substrate. The paper considers the fabrication of microstrip antennas made from in-house and commercially available transparent conductors. Measurements of the antennas? radiation pattern, input impedance and VSWR coefficient are presented for comparison purposes.
Source: IEE Seminar - Antennas for Automotive Applications. March 2000 |
Broadband Networks | | Analysis
(February 2006)
European HDTV arrives
Source: Communications Engineer - Feb/Mar 2006 | | | WiMAX: Interoperable IP Centric Broadband Wireless
Paul Senior, WiMAX Forum Board of Directors and VP Marketing, Airspan Networks (November 2004)
View the Power Point presentations from Paul Senior's paper presented at the Hot Topics Forum, November 2004.
Source: Hot Topics Forum, November 2004 | | | Equal terms
Chris Lindsay (December 2004)
SDSL rollouts are gaining momentum on the back of a very simple fact: the web is becoming symmetric.
Source: Communications Engineer - Dec/Jan 04/05 | | | ADSL2: A sequel better than the original?
S Androulidakis, D Kagklis, T Doukoglou and S Skenter (June 2004)
Following the rapid success of ADSL deployments around the world, a new flavour of the standard, ADSL2, is promising more than double upstream rates and backward compatibility with existing customer equipment.
Source: Communications Engineer, June 2004 | | | And it BGAN to happen...
C Forrester (June 2004)
UK-based satellite operator Inmarsat is making steady progress with its Broadband Global Area Network (BGAN) service, planned to launch in 2005, which is intended to provide affordable satellite-based broadband access to users almost anywhere on the planet.
Source: Communications Engineer, June 2004 | | | Global motion
P Dempsey (June 2004)
With North America and Europe taking 80% of today’s IP address pool, it is hardly surprising that Asia has taken the lead in adopting IPv6 for its greater addressing capacity. That many nations in this region are also building out brand new communications backbones has further simplified decisions to choose the latest technology.
Source: Information Professional, June 2004 | | | True broadband for the countryside
J Sydor, Communications Research Centre, Canada (March 2004)
The author reports on work carried out at the Communications Research Centre (CRC) in Ottawa, Ontario, into extending wireless broadband internet to remote rural users. Currently 22% of Canadians do not have access to broadband services.
Source: Communications Engineer, April 2004 | | | On the lookout
S Cadzow (February 2004)
Reports on work currently being carried out by the European Telecommunications Standards Institute (ETSI), examining the provision of security for end-to-end communication over heterogenous networks. The goal is to create an environment for Next Generation Networks (NGNs) which meets or exceeds the expectation of today's fixed teephone network.
Source: Communications Engineer, February 2004 | | | Traffic modelling: the advent of fractals
S H Mian, University of Wales, Cardiff (February 2003)
High speed network traffic mechanisms are propelling the growth of communications services such as multimedia, multi-player gaming and video on demand. Effective network design requires a modelling approach which can capture the characteristics of rapidly changing network traffic. The approach described here exploits the self-similar, or fractal, properties of network traffic.
Source: Communications Engineer, February 2003 | | | Quality of service management for broadband residential video services
R J Green,Birmingham University, et al. (December 2001)
This paper introduces an approach to managing quality-of-service (QoS) for a residential video-on-demand (VoD) service employing MPEG-2 transport streams using an experimental asynchronous transfer mode (ATM)/asymmetric digital subscriber line (ADSL) access network testbed.
Source: Electronics & Communication Engineering Journal, December 2001 | | | Broadband communications from a high-altitude platform: the European HeliNet programme
J Thornton, D Grace, C Spillard, University of York, T Konefal, University of York and T C Tozer, University of York (May 2001)
HeliNet is a consortium-led European project to develop a pilotless solar-powered aircraft from which broadband communication services could be supported. This paper discusses some of the key issues, including millimetre-wave antennas and propagation, and an estimate of the number of cells that might be supportable by an early platform prototype.
Source: Electronics & Communication Engineering Journal June 2001 | | | Realising the broadband future
W Webb, Motorola (July 2000)
The convergence of fixed and mobile networks into a seamless broadband communications infrastructure remains a tantalising dream. Describes how the dream might be transformed into a ubiquitous reality.
Source: IEE Review July 2000 | | | Virtual private networks - how they work
R Younglove, Lucent Technologies NetworkCare Security Services (November 2000)
VPNs are hot, and for good reason. They promise to help organisations more economically support sales over the Internet, tie business partners and suppliers together, link branch offices with each other, and support telecommuter access to corporate network resources.
Source: Computing & Control Engineering Journal December 2000 | | | Broad is the way
T Mitchell, Multiple Access Communications (January 2001)
Will ultra-wideband technology deliver on its promise to make better use of bandwidth? Describes the basic principles and the role of regulation in determining the UWB devices destined for commercial deployment. One consequence of the severe constraints on spectrum availability has been a growing interest in the development of novel technologies aimed at allowing new services to use spectrum already allocated to established services, but without causing significant interference to incumbent users. Ultra-wideband (UWB) systems, which combine definition by adding all signals that have bandwidths in excess of 1·5 GHz.
Source: IEE Review January 2001 |
Broadcasting | | 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 | | | What exactly is...Digital Radio Mondiale?
I Poole (March 2004)
Describes the new DRM standard for AM audio broadcasting, developed by a consortium founded in China in 1998, and now made up of 82 organisations representing 29 countries.
Source: Communications Engineer, April 2004 |
Broadcasting | | 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 | | | What exactly is...Digital Radio Mondiale?
I Poole (March 2004)
Describes the new DRM standard for AM audio broadcasting, developed by a consortium founded in China in 1998, and now made up of 82 organisations representing 29 countries.
Source: Communications Engineer, April 2004 | | | The dusk of standard TV
N Flaherty (March 2004)
This article looks at the growth of the market for high-definition TV (HDTV), and considers a number of technical and licensing issues which are constraining the pace of that growth.
Source: Communications Engineer, April 2004 | | | Battle of the blues
N Flaherty (March 2004)
Will lack of industry standards hamper the potential of blue lasers in consumer electronics systems?
Source: IEE Review, April 2004 | | | Putting conditional access into set-top boxes
M Hutchison (February 2004)
Software can represent one of the biggest costs of system design. Prepackaged support software for systems such as set-top box decoders can reduce the development burden with a variety of techniques.
Source: Electronics Systems and Software, February 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 | | | Control implications of video servers storing MPEG-compressed material in multi-channel broadcast environments
M Meechan, Encoda Systems (April 2002)
This paper looks first to the manner in which falling costs and increasing capacity of drive-based storage, and the growing sophistication of compression processes have persuaded many system architects and users away from traditional tape-based storage systems. It then discusses the implications of automated control, using both generic and native protocols, and the way this provides both a rich and constantly evolving feature set, and hitherto impossible flexibility of content manipulation, to the modern broadcaster.
Source: IEE Seminar on Visual media standards for today and tomorrow, 25 April 2002 | | | Thinking outside the box
D Jordan, Philips Electronics UK (November 2001)
In these video highlights, David Jordan explores the revolution of content, quality and functionality in television spawned by technology and speculates on what is in store over the coming years in these areas, as well as on television?s place in the individual?s interactions with businesses big and small, other individuals and with Government.
Source: IEE Mountbatten Memorial Lecture, 27th November 2001 | | | Transposer systems for digital terrestrial television
P B Kenington, Wireless Systems International, et al. (February 2001)
Before the analogue TV signal can be switched off in the UK to release valuable spectrum for use by other commercial services the coverage of the digital terrestrial television service needs to be increased from the present 70%. This paper considers a number of transposer designs, employing both DSP and high-temperature superconducting techniques, that could extend coverage cost-effectively.
Source: Electronics & Communication Engineering Journal, February 2001 | | | Agents, Engines & Architectures ? Broadcast Network Management
Mike Meechan, Encodasystems (October 2001)
With the move from analogue programme output towards DVB, old-style test-and-measurement techniques are no longer applicable to sophisticated digital transport streams. The various concepts, components and methods used in the management and control of this new breed of programme distribution networks are discussed, as well as possible future developments.
Source: |
Circuit Analysis | | Modified nodal analysis: an essential addition to electrical circuit theory and analysis
L M Wedepohl and L Jackson (May 2002)
The known limitations of classical mesh and nodal methods of analysing linear electrical circuits are described before considering an established modification of the nodal approach. ‘Modified nodal analysis’ is well suited both to symbolic and numeric analysis of complex circuits using modern matrix-based software. The simplicity of incorporating into the matrix equations all types of passive and active circuit elements is demonstrated and examples are used to illustrate further the efficacy of the method.
Source: Engineering Science And Education Journal June 2002 |
Codes | | Performance analysis of punctured convolutional codes and turbo-codes
K H Sayhood, Z G Ling and W L Nan, Southeast University (August 2001)
This paper presents simulation results for comparing the performance of turbo-codes with that of the punctured convolutional codes proposed for the new digital system for radio broadcasting in the short-wave bands.
Source: Electronics & Communication Engineering Journal, August 2001 | | | Fractal Dimension Segmentation: Isolated Speech Recognition
S Fekkai, M Al-Akaidi, J Blackledge, P Urwin, De Montfort University (March 2000)
Fractal Dimension Segmentation (FDS) characterizes variations in texture across a signal or image in terms of variations in the fractal dimension. In this paper FDS is applied to a number of different speech signals and the results discussed for isolated words and the components (e.g. fricatives) from which these words are composed.
Source: IEE Colloquium on Speech Coding Algorithms for Radio Channels, London, April 2000 | | | Interoperable Secure Voice Communications in Tactical Systems
J S Collura, D J Rahikka, National Security Agency (March 2000)
This paper discusses one next generation voice coding technology, the enhanced Mixed Excitation Linear Prediction (MELPe) voice coding algorithmic suite, and the additions under development and in consideration.
Source: IEE Colloquium on Speech Coding Algorithms for Radio Channels, London, April 2000 | | | Phase Modelling For Low Bit-Rate Speech Coding
B M G Cheetham, University of Manchester , X Q Sun, Lucent Technologies & P A Barrett, BT Laboratories (March 2000)
This paper is concerned with the phase spectra of voiced speech segments digitised at low bit-rates using sinusoidal interpolative coding techniques. Commonly accepted models for voiced speech production are examined to determine ways of more accurately relating phase spectra to magnitude spectra.
Source: IEE Colloquium on Speech Coding Algorithms for Radio Channels, London, April 2000 | Cryptography | | High-Grade Encryption
T Smith, Marconi (January 2000)
For high-security potential users of TETRA, such as the military, higher-grade encryption is required. In the efficient use of this equipment by such communities, an appliqué-based approach has necessarily been taken. The impact of this on performance and potential application is addressed.
Source: IEE Colloquium on Tetra Market and Technology Developments London, February 2000. | Error Correction Codes Sorry, there are no articles for this topic. Turbo Codes | | Turbo-codes: the ultimate error control codes?
A Burr, University of York (August 2001)
Turbo-codes promise the attainment of the ‘Holy Grail’ of communication theory: to achieve the ultimate limits of capacity of a communication channel. Following their announcement in 1993, they have found a very wide range of applications, from third-generation mobile communication systems to deep-space exploration. The discovery of turbo-codes has resulted in a renaissance of coding research.
Source: Electronics & Communication Engineering Journal, August 2001 |
Communication Satellites | | And it BGAN to happen...
C Forrester (June 2004)
UK-based satellite operator Inmarsat is making steady progress with its Broadband Global Area Network (BGAN) service, planned to launch in 2005, which is intended to provide affordable satellite-based broadband access to users almost anywhere on the planet.
Source: Communications Engineer, June 2004 | | | High-altitude platforms for wireless communications
T C Tozer and D Grace, University of York (May 2001)
The demand for high-capacity wireless services is bringing increasing challenges, especially for delivery of the ‘last mile’. An emerging solution is offered by high-altitude platforms (HAPs) operating in the stratosphere at altitudes of up to 22 km to provide communication facilities. This paper outlines the application and features of HAPs, and some specific development programmes. Particular consideration is given to the use of HAPs for delivery of future broadband wireless communications.
Source: Electronics & Communication Engineering Journal June 2001 | | | Data and Broadband Services FreedomIP, the High-Powered Multimedia VSAT
O Hauw, Matra Marconi Space (February 2000)
Images, chat, data, news from all over the globe, in any place, at any time. We are in the midst of a major business and technology driven revolution. Up to the 1990s MIS?s primary concerns were how to increase the speed with which information can be created; and once the information was created then how to increase the speeds needed to process that information. This time as we are reaching gigabits per second processing speeds, the concern is less to do with creating or processing the information. Much more to do with the availability of the information and the ease at which it can be accessed anywhere and any time to satisfy business, social, political, and personal demands.
Source: Paper from IEE Seminar - Satellite services and the internet. February 2000. | | | Improved TCP Performance over Long-Delay and Error-Prone Links
M West and S McCann, Roke Manor Research (February 2000)
The enormous growth in Internet use has led to a desire to provide efficient transfer over a variety of delivery technologies including satellite links and mobile radios. However, using TCP as the transport layer can conflict with the physical characteristics of those links, severely limiting the efficiency of delivery. Work undertaken by Roke Manor Research Ltd has resulted in the development of enhancer technology that can dramatically improve throughput and efficiency.
Source: Paper from IEE Seminar - Satellite services and the internet. February 2000. | | | Mediating between the Internet and the Satellite Domain
P Norris, Logica UK Ltd (February 2000)
Internet business is part of a broader sector called digital interactive services. This latter sector is undergoing rapid change in its technology, its value chain, its commercial players and its customers. Satellite operators are having to adapt their services, content and facilities to stay in touch with this rapidly changing scene.
Source: Paper from IEE Seminar - Satellite services and the internet. February 2000. | | | Evaluation of Applications Performance for TCP/IP via Satellite Links
Y Chotikapong and Z Sun, University of Surrey (February 2000)
In the recent year the research in the area of satellite communication has been widen to cover many areas which once considered as higher layer protocols such as TCP/IP, UDP, HTTP, FTP. The main reason is the growing demand for satellite networks to provide wider range of services with Internet service as the fastest growing satellite communication applications. A number of commercial satellite systems have been proposed from all over the world targeting multimedia services.
Source: Paper from IEE Seminar - Satellite services and the internet. February 2000. | | | Evaluation of Applications Performance for TCP/IP via Satellite Links (Slides)
Y Chotikapong and Z Sun, University of Surrey (February 2000)
In the recent year the research in the area of satellite communication has been widen to cover many areas which once considered as higher layer protocols such as TCP/IP, UDP, HTTP, FTP. The main reason is the growing demand for satellite networks to provide wider range of services with Internet service as the fastest growing satellite communication applications. A number of commercial satellite systems have been proposed from all over the world targeting multimedia services.
Source: Slides from IEE Seminar - Satellite services and the internet. February 2000 | | | IP Voice Conferencing over Geostationary Satellite Systems
H Cruickshank and Z Sun, University of Surrey (February 2000)
Satellites are foreseen to be complementary to the future terrestrial networks in deploying multimedia communication systems. The use of Geostationary multi-beams and On-Board Processing (OBP) provides a great opportunity for the speedy deployment of real time services such as IP Voice services over satellites. Voice over IP is a new technology and has the potential to revolutionise telephone communications within the modern enterprise, and promises new integrated services and lower costs.
Source: Paper from IEE Seminar - Satellite services and the internet. February 2000. | | | IP Voice Conferencing over Geostationary Satellite Systems (Slides)
H Cruickshank and Z Sun, University of Surrey (February 2000)
Satellites are foreseen to be complementary to the future terrestrial networks in deploying multimedia communication systems. The use of Geostationary multi-beams and On-Board Processing (OBP) provides a great opportunity for the speedy deployment of real time services such as IP Voice services over satellites. Voice over IP is a new technology and has the potential to revolutionise telephone communications within the modern enterprise, and promises new integrated services and lower costs.
Source: Slides from IEE Seminar - Satellite services and the internet. February 2000. | | | SkyDSL Broadband Services via Satellite
C Zippel, European Telecommunications Satellite Organization (EUTELSAT) (March 2000)
Explains basic features of SkyDSL and charging structure.
Source: Presented at IEE EUTELSAT Colloquium, London March 2000. | | | UAVs and HAPs - Potential Convergence for Military Communications
T Tozer and D Grace, University of York, and J Thompson and P Baynham, DERA (June 2000)
This overview looks at opportunities for providing military communications from Unmanned Air Vehicles (UAVs), or parallel civilian developments (High Altitude Platforms - HAPs). Advantages are outlined, and example application scenarios illustrated. (c) Crown Copyright
Source: Paper from IEE Colloquium - Military satellite communications. June 2000. | | | DERA Transmitter Location Service (TLS) (slides)
R Rideout, DERA (May 2000)
This paper presents an overview of geolocation and its principles, and describes the capability of the DERA TLS in meeting the needs of satcom service providers, both now and in the Skynet 5 era. In describing the principles of satellite based geolocation, fundamental constraints on the achievable accuracy of emitter localisation are also considered. (c) Crown Copyright
Source: IEE Colloquium on Military Satellite Communications, London, June 2000. | | | DERA Transmitter Location Service (TLS)
R Rideout, DERA (May 2000)
This paper presents an overview of geolocation and its principles, and describes the capability of the DERA TLS in meeting the needs of satcom service providers, both now and in the Skynet 5 era. In describing the principles of satellite based geolocation, fundamental constraints on the achievable accuracy of emitter localisation are also considered. (c) Crown Copyright
Source: IEE Colloquium on Military Satellite Communications, London, June 2000 | Military Communications | | New technologies for satcom antennae (agile SHF band satcom array for fast jet applications)
K T Lambell & K J Terry, Roke Manor Research & I L Freeman, BAE Systems (October 2002)
The advantages of electronically steered phased array antennas over traditional mechanically steered dish antennas for "satcom on the move" applications are well known. A candidate solution to the challenges and design constraints for a phased array satcom antenna on a fast jet platform is presented. A versatile analysis tool, developed and used to evaluate the performance of semi-conformal arrays, is described. Recent developments in antenna tile design, including the construction and testing of prototypes are presented.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Military satellite modem developments in the UK: from early days to new developments [slides]
D Attwood, M Bowyer and N Petfield, Astrium (October 2002)
For over 30 years, the UK has been forefront in the introduction of spread spectrum modems into transparent X-band Military Satellite Communications (MILSATCOM) systems. This paper discusses the advances in satellite modem technology since the introduction of the Direct Sequence CDMA modem first used on the Skynet 2 MILSATCOM in the early 1970s. It includes an overview of the VSC-330, the world’s first wide-band Frequency Hopping Spread Spectrum modem, which was developed for use on Skynet 4 in the 1980s; the troubled UMS programme is also discussed.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Military satellite modem developments in the UK: from early days to new developments
D Attwood, M Bowyer and N Petfield, Astrium (October 2002)
For over 30 years, the UK has been forefront in the introduction of spread spectrum modems into transparent X-band Military Satellite Communications (MILSATCOM) systems. This paper discusses the advances in satellite modem technology since the introduction of the Direct Sequence CDMA modem first used on the Skynet 2 MILSATCOM in the early 1970s. It includes an overview of the VSC-330, the world’s first wide-band Frequency Hopping Spread Spectrum modem, which was developed for use on Skynet 4 in the 1980s; the troubled UMS programme is also discussed.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Dual band military satellite communications manpack terminal with IP technology
G Iglesias, INDRA Espacio (October 2002)
Based on our civil Ku-Band mini terminal, and the experience acquired in the design, manufacture, and support of a wide range of military terminals in X-band, Indra Espacio has developed a satellite manpack terminal for military applications, to use in the new modern fast action forces missions.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Pilot direct broadcast system ? gigabytes to the battlespace [slides]
J Creasey, BAE Systems (October 2002)
In February 2001 BAE Systems (CDI) won a five-year contract from the Defence Procurement Agency to develop a Direct Broadcast System. The UK DBS programme has been, and still is, very tight indeed – an initial, security accredited, working system had to be HQ- and Field- ready to function in a difficult operational environment. A brief history of the direct broadcast within the commercial world and its interest to the military is discussed, including descriptions of the capabilities that the US, Australia and UK Defence communities have been investing in, and a look to the realms of "Information Management" and its relevance to the Direct Broadcast.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Role of commercial mobile satellite systems in the augmentation of military systems and operations [slides]
M Vilaca,Inmarsat et al. (October 2002)
This paper discusses how commercial Mobile Satellite Systems are evolving to serve defence needs for system interoperability, bandwidth on-demand, closed user group operations and increasing service/application support. Inmarsat 4 and R-BGAN/BGAN will be used to demonstrate how the architecture is realised. In particular, attention will be focused on how the commercial MSS complements existing military communication systems and serves as a platform to augment the delivery of data obtained from other commercial systems (e.g. remote sensing, imaging) for remote and mobile military end users.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | The role of multiband satellite communications terminals [slides 2]
R Shirley, ASTRIUM (October 2002)
The reasons for multiband terminals are for reasons of availability, coverage, capacity and priority. These can be addressed by multibanding but can equally be addressed by international agreements or Memoranda of Understanding to provide cost effective solutions. The operational scenarios are such that in most, if not all, cases, such planning is made well in advance, be it training or actual conflict. The questions therefore to be asked, perhaps, should be: "Why is multiband necessary? Why not select in advance?"
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | The role of multiband satellite communications terminals [slides 1]
R Shirley, ASTRIUM (October 2002)
The reasons for multiband terminals are for reasons of availability, coverage, capacity and priority. These can be addressed by multibanding but can equally be addressed by international agreements or Memoranda of Understanding to provide cost effective solutions. The operational scenarios are such that in most, if not all, cases, such planning is made well in advance, be it training or actual conflict. The questions therefore to be asked, perhaps, should be: "Why is multiband necessary? Why not select in advance?"
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | The role of multiband satellite communications terminals
R Shirley, ASTRIUM (October 2002)
The reasons for multiband terminals are for reasons of availability, coverage, capacity and priority. These can be addressed by multibanding but can equally be addressed by international agreements or Memoranda of Understanding to provide cost effective solutions. The operational scenarios are such that in most, if not all, cases, such planning is made well in advance, be it training or actual conflict. The questions therefore to be asked, perhaps, should be: "Why is multiband necessary? Why not select in advance?"
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Securing satellites communications
H Cruickshank et al, University of Surrey (October 2002)
This paper presents securing satellite communications using link level security (such as ATM security) or network level security (such as IPSEC), where both can be applied to military satellite communications. The paper examines the topic of securing very large multicast groups over satellites, where the group size and group dynamics have great impact on networks performance and network security.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Role of commercial mobile satellite systems in the augmentation of military systems and operations
M Vilaca,Inmarsat et al. (October 2002)
This paper discusses how commercial Mobile Satellite Systems are evolving to serve defence needs for system interoperability, bandwidth on-demand, closed user group operations and increasing service/application support. Inmarsat 4 and R-BGAN/BGAN will be used to demonstrate how the architecture is realised. In particular, attention will be focused on how the commercial MSS complements existing military communication systems and serves as a platform to augment the delivery of data obtained from other commercial systems (e.g. remote sensing, imaging) for remote and mobile military end users.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 | | | Pilot direct broadcast system ? gigabytes to the battlespace
J Creasey, BAE Systems (October 2002)
In February 2001 BAE Systems (CDI) won a five-year contract from the Defence Procurement Agency to develop a Direct Broadcast System. The UK DBS programme has been, and still is, very tight indeed – an initial, security accredited, working system had to be HQ- and Field- ready to function in a difficult operational environment. A brief history of the direct broadcast within the commercial world and its interest to the military is discussed, including descriptions of the capabilities that the US, Australia and UK Defence communities have been investing in, and a look to the realms of "Information Management" and its relevance to the Direct Broadcast.
Source: IEE Seminar on Military Satellite Communication Systems, 31 October 2002 |
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