Noncoherent coded continuous phase modulation

TitleNoncoherent coded continuous phase modulation
Publication TypeConference Paper
Year of Publication2001
AuthorsLampe, L., R. Schober, G. Enzner, and J. B. Huber
Conference NameCommunications, 2001. ICC 2001. IEEE International Conference on
Pagination2216 -2220 vol.7
Keywordscontinuous phase modulation, CPM, decoding, demodulation, digital filters, feedback-free modulator, linear filter, low-complexity filtering, modulation coding, noncoherent coded continuous phase modulation, noncoherent coded transmission, noncoherent receiver, noncoherent sequence estimation, NSE metric calculation, per-survivor processing, phase reference symbol, receiver structure, receivers, recursive formula, reduced-state decoding, sequential estimation, Viterbi decoding

Continuous phase modulation (CPM) systems for noncoherent coded transmission are proposed and analyzed. Specifically, the application of a feedback-free modulator is regarded. For demodulation, a receiver structure which requires only two or three linear filters is considered. For decoding, noncoherent sequence estimation (NSE) with Viterbi decoding and per-survivor processing is applied. Noteworthy, in our approach the problems of low-complexity filtering and reduced-state decoding can be treated separately. Since we give a recursive formula for the phase reference symbol necessary for NSE metric calculation, computational effort is further decreased. Overall, in terms of complexity, the proposed noncoherent receiver provides significant advantages over approaches in the literature. The high performance of the novel noncoherent CPM system is confirmed by simulation results


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