DocumentCode :
1007022
Title :
Application of coding and diversity to UHF satellite sound broadcasting systems
Author :
Miller, John E.
Author_Institution :
ORI Inc., Landover, MD, USA
Volume :
34
Issue :
4
fYear :
1988
fDate :
12/1/1988 12:00:00 AM
Firstpage :
465
Lastpage :
475
Abstract :
Results are presented of a study of alternative means by which to reduce the required link margins in a satellite sound broadcasting system, thus improving the economic feasibility of the service and increasing the possibility of sharing a radio-frequency allocation with terrestrial services. Propagation models are presented that account for the effects of shadowing and multipath in the operating environments. Comparisons are made of the performance that results using time, frequency, and space diversity to moderate the effects of shadowing and multipath for vehicular and portable receivers. It is shown that space diversity has the broadest applicability in restoring the channel performance that would otherwise be degraded by Rayleigh fading channels and by quasistationary AWGN (additive white Gaussian noise) channels. Example link budgets are given for candidate satellite sound broadcasting system designs that use analog FM and digital modulation techniques
Keywords :
direct broadcasting by satellite; diversity reception; encoding; radio broadcasting; DBS; Rayleigh fading channels; UHF; additive white Gaussian noise; analog FM; coding; digital modulation; frequency diversity; link budgets; multipath; portable receivers; propagation models; quasistationary AWGN; satellite sound broadcasting system; shadowing; space diversity; time diversity; vehicular receivers; AWGN; Acoustic propagation; Additive white noise; Degradation; Environmental economics; Fading; Frequency diversity; Radio frequency; Satellite broadcasting; Shadow mapping;
fLanguage :
English
Journal_Title :
Broadcasting, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9316
Type :
jour
DOI :
10.1109/11.16490
Filename :
16490
Link To Document :
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