A spectrally efficient constant envelope modulation technique for PCS and mobile communications

Author

Guo, Yanpeng ; Feher, Kamilo

Author_Institution

Dept. of Electr. Eng., California Univ., Davis, CA, USA

Volume

40

Issue

3

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

177

Lastpage

183

Abstract

A newly developed constant envelope FQPSK modem/radio architecture, which employs a modified double-jump (DJ) filter in the cross-correlated FQPSK system, is proposed for personal communications systems (PCS) and mobile radio applications. Power efficiency, spectrum efficiency, BER, and system capacity of this system are investigated in a non-linear amplified (NLA) Rayleigh fading environment. We demonstrate that with the simplest threshold detectors (binary robust eye diagrams in I and Q channels), this system is 4-7 dB more power efficient than the US digital cellular and Japanese Handyphone standard π/4-QPSK, 50%-100% more spectrally efficient than the European standard GMSK, and it almost double the capacity of GMSK

Keywords

fading; filtering and prediction theory; frequency allocation; mobile radio systems; modems; personal communication networks; phase shift keying; radiowave propagation; signal detection; BER; FQPSK modem/radio architecture; I channels; PCS; Q channels; binary robust eye diagrams; constant envelope modulation; cross-correlated FQPSK system; double-jump filter; mobile communications; mobile radio applications; nonlinear amplified Rayleigh fading; personal communications systems; power efficiency; spectrum efficiency; system capacity; threshold detectors; Bit error rate; Detectors; Digital communication; Filters; Fluctuations; Land mobile radio; Mobile communication; Personal communication networks; Rayleigh channels; Telephone sets;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.318679

Filename

318679