DocumentCode
1240177
Title
Signal-to-Noise Ratios in Coherent Soft Limiters
Author
Lesh, James R.
Author_Institution
California Institute of Technology, Pasedena, CA, USA
Volume
22
Issue
6
fYear
1974
fDate
6/1/1974 12:00:00 AM
Firstpage
803
Lastpage
811
Abstract
Expressions for the output signal-to-noise power ratio of a bandpass soft limiter followed by a coherent detection device are presented and discussed. It is found that a significant improvement in the output signal-to-noise ratio (SNR) at low input SNR´s can be achieved by such soft limiters as compared to hard limiters. This indicates that the soft limiter may be of some use in the area of threshold extension. Approximation methods for determining output signal-to-noise spectral densities are also presented.
Keywords
Bandpass limiting; Limiting, bandpass; Approximation methods; Band pass filters; Demodulation; Filtering theory; Gaussian noise; H infinity control; Low pass filters; Narrowband; Signal to noise ratio; Space technology;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1974.1092305
Filename
1092305
Link To Document