Performance of Partially Coherent Binary Reception

Abstract

This paper considers the performance of a partially coherent detector of phase-shift keyed (PSK) modulated binary data, where the receiver's phase reference is noisy and derived from the carrier component of the received signal by means of a narrow band tracking filter (phase locked loop). The statistics of the detector output are derived and the bit error probability is graphically illustrated as a function of the data channel signal to noise ratio, the signal to noise ratio existing in the phase lock loop bandwidth and the phase lock loop bandwidth to bit rate ratio. The results obtained for the single channel partially coherent detector are used to derive the performance of binary data detection after maximum ratio diversity combination of the two video signals, each of them being demodulated by partially coherent detectors.