Results 321 to 330 of about 4,063,393 (390)
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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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Analog Signal Processing: A Possible Alternative or Complement to Dominantly Digital Radio Schemes
IEEE Microwave Magazine, 2013Today's exploding demand for faster, more reliable, and ubiquitous radio systems in communication, instrumentation, radar, and sensors poses unprecedented challenges in microwave and millimeter-wave engineering.
C. Caloz +3 more
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Popular Music and Society, 2015
In Radio in the Digital Age, Andrew Dubber provides a timely look at the role of radio in contemporary digital society.
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In Radio in the Digital Age, Andrew Dubber provides a timely look at the role of radio in contemporary digital society.
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DRM---- the Digital Radio on the Way
2007 IEEE Symposium on Computers and Communications, 2007Short-wave together with medium- and long-wave broadcasting still has large listenership worldwide. With the newly developed digital system DRM will overcome these reception problems and bring high audio quality, which will change the whole broadcasting scenario.
Feng Zhang +3 more
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Digital cellular radio systems [PDF]
, 1989 In 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. G. Gardiner, J. D. Parsons
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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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2010
In 2000, a further digital broadcasting standard called DRM - Digital Radio Mondiale [ETS 101980] was created. DRM is intended for the frequency band from 30 kHz … 30 MHz, in which the AM service was normally transmitted. The broadcasting frequency bands were basically divided in accordance with their propagation characteristics, as follows: LW ...
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In 2000, a further digital broadcasting standard called DRM - Digital Radio Mondiale [ETS 101980] was created. DRM is intended for the frequency band from 30 kHz … 30 MHz, in which the AM service was normally transmitted. The broadcasting frequency bands were basically divided in accordance with their propagation characteristics, as follows: LW ...
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, 2012
In digital radio mondiale (DRM)-based high frequency (HF) passive bistatic radar, target echoes need to be detected against the direct-path wave and multipath echoes. A novel approach is proposed to reject the direct-path wave and multipath echoes.
Zhixin Zhao +4 more
semanticscholar +1 more source
In digital radio mondiale (DRM)-based high frequency (HF) passive bistatic radar, target echoes need to be detected against the direct-path wave and multipath echoes. A novel approach is proposed to reject the direct-path wave and multipath echoes.
Zhixin Zhao +4 more
semanticscholar +1 more source
Digital technologies in cellular radio
38th IEEE Vehicular Technology Conference, 2003The technology choices are examined toward increasing capacity of the present analog 800 MHz cellular system in North America. A possible dual mode concept based on digital cellular radio technology is described. The basic choices regarding speech coding, channel coding, digital modulation and multiple access are discussed. It is found that a promising
J. Uddenfeldt, K. Raith, B. Hedberg
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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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