Noncoherent Coded Continuous Phase Modulation

Authors:

Enzner, G. ,  Lampe, L. H. J. ,  Schober, R. ,  Huber, J. B.

Book Title:

Proceedings of Aachen Symposium on Signal Theory

Address:

Aachen, Germany

Date:

Sep. 2001

Language:

English

Abstract

We discuss convolutionally encoded continuous phase modulation (CPM) with noncoherent detection. Specifically, the application of a
feedback-free modulator is considered, which is perfectly suited to coded transmission. Demodulation employs a frequency-sampling receiver with reduced representation of the signal space, whereas the decoder makes use of reduced-state noncoherent sequence estimation (NSE). In particular, NSE means the application of recently proposed noncoherent per-survivor Viterbi processing. Recursive calculation of the implicit phase reference symbol is proposed in this paper to keep the NSE complexity low. Receiver front-end and NSE are optimized separately. The resulting performance is demonstrated by simulations.

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