DocumentCode :
1229166
Title :
Decomposition of M-ary CPM signals into PAM waveforms
Author :
Mengali, Umberto ; Morelli, Michele
Author_Institution :
Dipartimento di Ingegneria della Inf., Pisa Univ., Italy
Volume :
41
Issue :
5
fYear :
1995
fDate :
9/1/1995 12:00:00 AM
Firstpage :
1265
Lastpage :
1275
Abstract :
It is widely known that minimum shift keying (MSK) may be seen as a PAM signaling scheme and that the same is true, albeit approximately, with MSK-like modulations. It is also known (perhaps not so widely) that any binary continuous phase-modulated (CPM) signal may be exactly decomposed into the sum of a few PAM waveforms. In this paper we show that this property extends to multilevel CPM signaling. Features of a PAM decomposition are discussed as a function of the alphabet size, the modulation index, and the frequency response of the system. It is found that, especially with signaling schemes with a long memory, the decomposition has so many terms that it becomes unmanageable. For these cases an approximation is proposed with a limited number of terms
Keywords :
continuous phase modulation; frequency response; minimum shift keying; pulse amplitude modulation; waveform analysis; M-ary CPM signals; MSK-like modulations; PAM signaling scheme; PAM waveforms; alphabet size; binary continuous phase-modulated signal; decomposition; frequency response; minimum shift keying; modulation index; multilevel CPM signaling; Bandwidth; Continuous phase modulation; Detectors; Filter bank; Frequency response; Frequency synchronization; Maximum likelihood detection; Modulation; Phase detection; Phase modulation; Viterbi algorithm;
fLanguage :
English
Journal_Title :
Information Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9448
Type :
jour
DOI :
10.1109/18.412675
Filename :
412675
Link To Document :
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