Viterbi decoding of of DM–CPM signals

Abstract EN

Recently, a new class of Orthogonal Frequency Division Multiplexing–Continuous Phase Modulation (OFDM–CPM) signals that out performs conventional OFDM–PSK signals was introduced.

In these signals, binary data sequence is mapped to complex symbols using the concept of correlated phase states of a CPM signal.

While optimum and suboptimum minimum error probability algorithms have been employed to arrive at this superiority, in this paper we propose Viterbi algorithm for detection of OFDM–CPM signals and present their performance over multipath fading channels.

It is shown that Viterbi receivers offer performance that is nearly the same as that of the minimum BER receiver and are easily implemented.