The Viterbi Receiver for Correlative Encoded MSK Signals

It has previously been shown that MSK modulation with correlative encoded symbols, using first- and second-order encoding polynomials, can give rise to signals with excellent bandwidth efficiency. In this paper we specify and analyze the Viterbi receiver for such signals. The receivers are not very complex as they either require four or eight states to be stored and processed during each symbol interval. Our analysis concerns the bit error rate and the transfer function bound technique is utilized. Perfect coherent operation of the receiver is assumed in the error analysis.