Performance analysis of noncoherent DS-CDMA systems in a Nakagami fading channel with arbitrary parameters

Author

Efthymoglou, G.P. ; Aalo, V.A. ; Helmken, H.

Author_Institution

Dept. of Electr. Eng., Florida Atlantic Univ., Boca Raton, FL, USA

Volume

144

Issue

3

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

166

Lastpage

172

Abstract

Code division multiple access (CDMA) systems are actively being considered for use in mobile environments (such as cellular and personal communications systems). New semianalytical expressions for the bit error rate of an asynchronous direct sequence CDMA system employing noncoherent binary demodulation formats in a Nakagami fading multipath channel are derived. Two binary demodulation schemes are considered, namely, the differential phase shift keying and the square-law demodulation with orthogonal spreading sequences. In each case the analysis assumes that an arbitrary number of independent but nonidentical resolvable paths are combined by the RAKE receiver. The results show that the effect of nonidentical fading on system performance cannot be ignored in such systems

Keywords

cellular radio; code division multiple access; coding errors; demodulation; differential phase shift keying; error statistics; fading; multipath channels; personal communication networks; pseudonoise codes; radio receivers; spread spectrum communication; Nakagami fading channel; RAKE receiver; asynchronous direct sequence CDMA system; bit error rate; cellular radio; channel parameters; code division multiple access; differential phase shift keying; mobile environments; multipath fading; noncoherent DS-CDMA systems; noncoherent binary demodulation formats; nonidentical fading; orthogonal spreading sequences; performance analysis; personal communications systems; square-law demodulation; system performance;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19971239

Filename

601050