Title :
Development and application of M-ary Gaussian minimum phase shift keying modulation
Author :
Cochran, Bruce A.
Author_Institution :
SICOM Inc., Scottsdale, AZ, USA
Abstract :
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
Keywords :
cellular radio; error statistics; fading; interference suppression; intersymbol interference; land mobile radio; minimum shift keying; radiofrequency interference; trellis coded modulation; BER performance; GMSK modulation; ISI; M-ary Gaussian minimum phase shift keying; cellular market; constant envelope; constant-envelope modulation; fading channels; high-order GMSK; intersymbol interference; link quality; multiple-symbol pulse shape; narrow spectrum; nonfading channels; trellis coded modulation; Bandwidth; Bit error rate; Fading; Intersymbol interference; Maximum likelihood estimation; Modulation coding; Pulse amplifiers; Pulse modulation; Pulse shaping methods; Shape;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.524510
