DocumentCode :
910644
Title :
The clipping loss in correlation detectors for arbitrary input signal-to-noise ratios
Author :
Cheng, M.C.
Volume :
14
Issue :
3
fYear :
1968
fDate :
5/1/1968 12:00:00 AM
Firstpage :
382
Lastpage :
389
Abstract :
The detection of stationary Gaussian signals in a background of stationary Gaussian noise by the analog multiplier correlator, the polarity coincidence correlator (PCC), and the sample polarity coincidence correlator (SPCC) is considered. It is assumed that signal and noise have identical normalized autocovariance functions, and they are not cross correlated with each other. The main contributions of this paper are the exact expressions for the output signal-to-noise ratio (SNR) for the correlators mentioned for all values of the input SNR. It is shown that there exists a critical value of the input SNR, such that, whenever this value is exceeded, the PCC output SNR exceeds that of the analog correlator. A sufficient condition for this gain in output SNR is obtained in terms of the input SNR. This result is illustrated for stationary Gauss-Markov processes.
Keywords :
Correlators; Background noise; Correlators; Detectors; Gaussian noise; Gaussian processes; Helium; Signal detection; Signal processing; Signal to noise ratio; Sufficient conditions;
fLanguage :
English
Journal_Title :
Information Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9448
Type :
jour
DOI :
10.1109/TIT.1968.1054159
Filename :
1054159
Link To Document :
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