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Suboptimal symbol-by-symbol demodulation of continuous phase modulated signals using the Laurent decomposition

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2 Author(s)
Heon Huh ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Krogmeier, J.V.

Symbol-by-symbol detection is often used in systems with interleaved coded modulation in order to provide the needed soft-decision metrics for the decoding of the outer code. The paper develops a suboptimal symbol-by-symbol detection method for the demodulation of continuous phase modulated (CPM) signals. The proposed algorithm offers a reduced-complexity symbol-by-symbol detection in which the numbers of matched filters and trellis states are appreciably reduced. The complexity reduction is achieved by approximating the CPM signal using the Laurent representation. A simulation study shows that the performance degradation relative to the optimal full complexity algorithm is small for a variety of CPM signals.

Published in:

Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on  (Volume:2 )

Date of Conference:

3-6 Nov. 2002