Abstract
Based on Laurent (1986) decomposition of a multilevel continuous phase modulation (CPM) as a sum of linearly modulated components, we derive new noncoherent sequence detection algorithms for M-ary CPM signals transmitted over additive white Gaussian noise (AWGN) channels. Noncoherent sequence detection based on the Viterbi algorithm (.) has been proposed for linearly modulated signals. These schemes are attractive because they closely approach the performance of coherent receivers with acceptable complexity. This paper extends previous results and proposes a general structure for noncoherent sequence detection of CPM signals. The robustness of noncoherent sequence detection schemes to phase noise and frequency offset is also demonstrated.
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