Coherent DS-CDMA performance in Nakagami multipath fading

Author

Eng, T. ; Milstein, L.B.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

Volume

43

Issue

38020

fYear

1995

Firstpage

1134

Lastpage

1143

Abstract

The coherent reception of direct sequence-code division multiple access (DS-CDMA) signals in a multipath fading channel is considered. The channel model assumes independent paths with Nakagami fading statistics; this model includes the Rayleigh channel os a special case and is a reasonable model for a frequency-selective fading channel. The bit error rate (BER) performance of a RAKE receiver under various multipath fading conditions is derived and evaluated. The results indicate that over 50 users may access the channel (assuming 127 chips per bit) simultaneously under typical fading conditions, and can achieve an uncoded BER of 0.01 with an average received signal-to-noise ratio per bit of 10 dB.<>

Keywords

Rayleigh channels; code division multiple access; coherence; error statistics; fading; multipath channels; pseudonoise codes; receivers; signal detection; spread spectrum communication; Nakagami multipath fading; RAKE receiver; Rayleigh channel; bit error rate performance; coherent DS-CDMA performance; coherent reception; direct sequence-code division multiple access; frequency-selective fading channel; multipath fading; signal-to-noise ratio; Bit error rate; Frequency-selective fading channels; Multiaccess communication; Multipath channels; Rayleigh channels; Signal to noise ratio; Statistics;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.380145

Filename

380145