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MILCOM 97 MILCOM 97 Proceedings, 2002
For several years, GEC-Marconi Hazeltine (GMH) and Northrop Grumman Corp. (NGC) have been developing and field demonstrating a common module programmable digital radio (PDR) for army, air force and navy applications. This third generation 1.5 MHz to 2 GHz software radio handles not only the traditional narrow band waveforms (HF, VHF, UHF), but also ...
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For several years, GEC-Marconi Hazeltine (GMH) and Northrop Grumman Corp. (NGC) have been developing and field demonstrating a common module programmable digital radio (PDR) for army, air force and navy applications. This third generation 1.5 MHz to 2 GHz software radio handles not only the traditional narrow band waveforms (HF, VHF, UHF), but also ...
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New Media & Society, 2000
Digital audio technology, though only a decade old in broadcasting, is being so comprehensively integrated into control rooms and studios that the time for wake-up calls to critics and theorists is past. Based on eight years' observation at BBC Radio and Danmarks Radio studios, this article speculates on how the new technology of radio is shaped by ...
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Digital audio technology, though only a decade old in broadcasting, is being so comprehensively integrated into control rooms and studios that the time for wake-up calls to critics and theorists is past. Based on eight years' observation at BBC Radio and Danmarks Radio studios, this article speculates on how the new technology of radio is shaped by ...
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Digital-to-radio converter for software radio
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), 2002We have proposed a digital-to-radio (D/R) converter that can directly change a digital signal generated by a logic circuit into a radio signal. This D/R converter enables an RF circuit and an antenna to be composed of one simple device, and the radio can be directly controlled by software; this is the essence of software radio.
T. Kohri, T. Hattori
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Delivering digits to rural radios: making Digital Radio Mondiale work
2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007This paper describes work done at BBC research towards ensuring that Digital Radio Mondiale (DRM) can be received reliably by our listeners. Our work in testing the first generation of consumer receivers is briefly described, followed by a detailed description of methods which next- generation receivers might use to extend reliable reception to a ...
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Digital cellular radio systems
1989In the last chapter, the use of established analogue modulation techniques was described in the context of high-capacity cellular radio telephone applications. Conclusions regarding existing systems operation and future developments may be drawn, and these centre on the issue of capacity.
J. D. Parsons, J. G. Gardiner
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1985
Considers free-space propagation and discusses deviations from it due to effects of terrain, atmosphere, and precipitation Describes multipath fading due to ground reflection or atmospheric refraction and characterizes it with fading parameters and statistical models Describes empirical path loss models Explains digital radio performance
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Considers free-space propagation and discusses deviations from it due to effects of terrain, atmosphere, and precipitation Describes multipath fading due to ground reflection or atmospheric refraction and characterizes it with fading parameters and statistical models Describes empirical path loss models Explains digital radio performance
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Digital Microwave Radio Program
MILCOM 1982 - IEEE Military Communications Conference - Progress in Spread Spectrum Communications, 1982In 1981 CECOM placed four contracts for the exploratory development of ECCM techniques which are to be considered for use in a new digital microwave radio development. A spread spectrum modem is under development which will operate in the 4.4 to 5.0 GHz band. The modem will also be designed to operate, with minor changes, in the 14.4 to 15.35 GHz range.
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Programmable channelized digital radio
[Proceedings] NTC-92: National Telesystems Conference, 2003Ongoing work by GEC-Marconi Electronic Systems Division in the development of a multifunction, common module, programmable digital radio/modem is described. The radio system handles conventional narrowband and spread-spectrum waveforms. The architecture developed is a programmable channelized approach.
R.S. Prill, M. Antonesco
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Digital radio frequency memory
Electronics & Communication Engineering Journal, 1990Digital radio frequency memory (DRFM) is a technique in which high-speed sampling and digital memory is used to store radio frequency and microwave signals. It is becoming a popular technique for the implementation of false-target ECM systems. The paper discusses the principles of DRFM and the advantages of alternative system architectures.
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Digital Telecommunications Radio Systems
MTT-S International Microwave Symposium Digest, 2005The increasing need for digital transmission facilities has generated requirements for microwave digital transmission systems that are reliable, have high performance and are spectrally efficient. Application considerations, including interference, frequency planning and growth, of such a system are discussed.
P.R. Hartmann, J.A. Crossett
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