Title :
Signal-to-Noise Ratios in Coherent Soft Limiters
Author_Institution :
California Institute of Technology, Pasedena, CA, USA
fDate :
6/1/1974 12:00:00 AM
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;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1974.1092305
