Phase Noncoherent Reception of Binary FSK Signals Using Postdecision Feedback
U. Mengali · IRE Transactions on Communications Systems · 1971
The results of Kramer and Viterbi m postdecision feedback problems are extended for the case when the phases of the binary frequency-shift keying (FSK) signals transmitted are not known. A suboptimum scheme for the receiver is suggested that is found to allow better performance characteristics than an optimum coherent receiver operating without postdecision feedback.