DocumentCode :
1227044
Title :
Multiplication by Square of Envelope as Means of Improving Detection Below FM Threshold
Author :
Roberts, J.H.
Author_Institution :
Plessey Company Ltd., Roke Manor, Romsey, Hampshire, England
Volume :
19
Issue :
3
fYear :
1971
fDate :
6/1/1971 12:00:00 AM
Firstpage :
349
Lastpage :
353
Abstract :
A theoretical analysis is presented of a novel form of FM demodulator where the FM signal is a flat band of Gaussian noise. The device offers an improvement over the demodulation capability of the conventional FM receiver in the region well below the threshold and the formulas governing its operation are simple, thus the manner in which changes in the modulation parameters Affect the performance can be easily determined. Threshold curves for high- and low-deviation cases are shown and compared with the performance offered by the conventional receiver and a frequency-feedback receiver.
Keywords :
Crosstalk; Demodulation; Envelope detectors; Fluctuations; Frequency division multiplexing; Frequency modulation; Gaussian noise; Phase distortion; Satellite communication; Shafts;
fLanguage :
English
Journal_Title :
Communication Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9332
Type :
jour
DOI :
10.1109/TCOM.1971.1090643
Filename :
1090643
Link To Document :
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