Optimum and suboptimum receivers for M-ary CPM signals based upon the Laurent representation

This paper involves a method for reduced complexity demodulation of continuous phase modulated (CPM) signals, which is based upon the extended Laurent representation of the nonlinear CPM modulation as a sum of time-offset pulse amplitude modulations. For signaling schemes with a long memory we deriv...

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Bibliographic Details
Main Authors: Figuera, M., Krogmeier, J.V.
Format: Conference Proceeding
Language:English
Subjects:
Amplitude modulation
AWGN
Continuous phase modulation
Costs
Demodulation
Detectors
Maximum likelihood detection
Phase modulation
Pulse modulation
Receivers
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Summary:This paper involves a method for reduced complexity demodulation of continuous phase modulated (CPM) signals, which is based upon the extended Laurent representation of the nonlinear CPM modulation as a sum of time-offset pulse amplitude modulations. For signaling schemes with a long memory we derive a reduced complexity maximum-likelihood (ML) detector by approximating the CPM signal with a set of optimized pulses. The implementation is done for the non-binary case and for partial response CPM systems. It is demonstrated that, in the context of sequence detection, a remarkable receiver complexity reduction is possible using this method. The performance criteria used in the paper is symbol error probability and comparisons are made with other algorithms.
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECF.2002.1040624