Adaptive receiver for DS-CDMA systems over flat fading channels

Author

Tantikovit, S. ; Li, E.C. ; Wang, M.Z.

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong

Volume

1

fYear

1996

fDate

29 Sep-2 Oct 1996

Firstpage

215

Abstract

An adaptive receiver with multiple tap-weight vectors is proposed to cancel multiple-access interference in direct-sequence code-division multiple-access systems. The receiver exploits the periodicity of the interference when the spreading sequence length is larger than system processing gain. Moreover, blind startup, which means startup without any known training sequence is possible with no loss of performance. A coded system is also investigated over fading channels. Further improvement can be attained with a modified algorithm which uses the decoded code word for the tap-weight adaptation

Keywords

Gaussian channels; Hamming codes; adaptive filters; adaptive signal detection; code division multiple access; fading; interference suppression; pseudonoise codes; radio receivers; spread spectrum communication; AWGN channel; DS-CDMA systems; Hamming code; adaptive receiver; blind startup; decoded code word; direct-sequence code-division multiple-access; flat fading channels; interference periodicity; multiple tap-weight vectors; multiple-access interference cancellation; spreading sequence length; tap-weight adaptation; AWGN; Adaptive filters; Bandwidth; Base stations; Decoding; Degradation; Fading; Interference cancellation; Multiaccess communication; Multiple access interference; Performance loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications, 1996. Record., 1996 5th IEEE International Conference on

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-3300-4

Type

conf

DOI

10.1109/ICUPC.1996.557868

Filename

557868