DocumentCode :
914164
Title :
Optimum Pre-Emphasis Network for Satellite Transmission of an FM TV Signal near or at Threshold
Author :
Loo, Chun
Author_Institution :
Department of Communications Communications Research Centre
Issue :
2
fYear :
1982
fDate :
6/1/1982 12:00:00 AM
Firstpage :
37
Lastpage :
43
Abstract :
An optimun pre-emphasis network for the transmission of a FM television signal which is received at or near threshold is described. Objective and subjective measurements of video signal-to-noise ratio (SNR) versus received carrier-to-noise ratio (CNR) for an optimum and CCIR pre-emphasis network are given. The results show that there is an improvement of about 2 dB in SNR using the optimum pre-emphasis network over that achieved with the CCIR network. Subjective tests also show a preference for use of the optimum pre-emphasis network. These results are useful in the design of low cost earth terminals to receive higher quality television signals from a satellite transmitter.
Keywords :
Autocorrelation; Demodulation; Frequency modulation; Frequency response; Noise level; Satellite broadcasting; Signal design; Signal to noise ratio; TV; Testing;
fLanguage :
English
Journal_Title :
Broadcasting, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9316
Type :
jour
DOI :
10.1109/TBC.1982.266442
Filename :
4044264
Link To Document :
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