Adaptive receiver for DS/CDMA multiuser communications

Author

Ueng, Fang-Biau ; Jeng, Li-Der

Author_Institution

Dept. of Electr. Eng., Nat. Chung Chen Univ., Ming-Hsiung, Taiwan

Volume

3

fYear

2003

fDate

7-10 Sept. 2003

Firstpage

2139

Abstract

In code division multiple access (CDMA) mobile communication systems with time-varying multipath channels, both intersymbol interference (ISI) and multiple-access interference (MAI) must be considered. The multipath effect usually change the characteristics of the spreading codes. Modification of the conventional receiver structure is needed to account for the interference of the multipath fading. This paper proposes an adaptive receiver for such multiuser direct sequence (DS) CDMA systems in multipath fading. We also analyze the mean square error (MSE) performances of the proposed receiver and the conventional receiver. Both the MSE analysis and simulation results show that the performance of the proposed receiver are better than that of the conventional receiver.

Keywords

code division multiple access; fading channels; intersymbol interference; mean square error methods; mobile radio; multipath channels; radiofrequency interference; receivers; spread spectrum communication; time-varying channels; ISI; MAI; MSE; adaptive receiver; code division multiple access; direct sequence CDMA system; intersymbol interference; mean square error; mobile communication systems; multiple-access interference; spreading codes; time-varying multipath channels; Analytical models; Fading; Intersymbol interference; Mean square error methods; Mobile communication; Multiaccess communication; Multipath channels; Multiple access interference; Performance analysis; Time varying systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on

Print_ISBN

0-7803-7822-9

Type

conf

DOI

10.1109/PIMRC.2003.1259093

Filename

1259093