Interference immunity effects in CPSK systems with hardlimiting transponders
Abstract
Transmission characteristics are described for Mary coherent phaseshift keyed (CPSK) systems with Nstage hardlimiting transponders where noise and multiple continuous wave (CW) interference sources are additively combined in each link. A general expression for the probability density function of the composite phase at the final link is derived; the overall error probability is then obtained from this general expression. Comparisons with Ncascaded linear amplifier systems clearly show the noise and interference immunity that result from the use of bandpass hard limiters (BPHLs). The BPHL system's error probability improvement versus interference sources is shown to be much larger than the improvement versus noise.
 Publication:

IEEE Transactions on Aerospace Electronic Systems
 Pub Date:
 January 1981
 DOI:
 10.1109/TAES.1981.309041
 Bibcode:
 1981ITAES..17...93O
 Keywords:

 Error Analysis;
 Interference Immunity;
 Noise Reduction;
 Phase Shift Keying;
 Probability Theory;
 Transmission Efficiency;
 Transponders;
 Bandpass Filters;
 Limiter Circuits;
 Linear Amplifiers;
 Performance Prediction;
 Phase Error;
 Probability Density Functions;
 Communications and Radar