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Development and application of M-ary Gaussian minimum phase shift keying modulation

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1 Author(s)
Cochran, B.A. ; SICOM Inc., Scottsdale, AZ, USA

GMSK's narrow spectrum and constant envelope account for its widespread acceptance in the cellular market. However, the current GMSK modulation exhibits two major flaws: (1) the ISI associated with GMSK's multiple-symbol pulse shape necessitates complex processing at the receiver; and, (2) the lack of a higher-order version of GMSK precludes incorporation of bandwidth-efficient coding to enhance link quality. This paper describes a technique used to improve BER performance of GMSK on fading and non-fading channels, and realize high-order GMSK. The availability of high-order GMSK enables the combination of constant-envelope modulation with trellis-coded modulation schemes specifically designed to operate on fading channels

Published in:

Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on  (Volume:3 )

Date of Conference:

18-22 Jun 1995