Blind adaptive signal reception for MC-CDMA systems in Rayleigh fading channels

Author

Lok, Tat M. ; Wong, Tan F. ; Lehnert, James S.

Author_Institution

Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong

Volume

47

Issue

3

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

464

Lastpage

471

Abstract

We consider signal reception in multicarrier code-division multiple-access (MC-CDMA) systems. A blind adaptive algorithm is proposed to determine a weight vector which optimally combines the desired signal contributions from different carriers while suppressing noise and interference. No knowledge of the channel conditions (fading coefficients, signature sequences and timing of interferers, statistics of other noises, etc.) nor any training sequence is required. The performance is examined for Rayleigh fading channels. Results show that the proposed algorithm performs well and is robust to the near-far problem. Hence, the results show that MC-CDMA systems are attractive candidates for future CDMA systems

Keywords

Rayleigh channels; adaptive signal detection; array signal processing; code division multiple access; direction-of-arrival estimation; interference suppression; multiuser channels; radiofrequency interference; MC-CDMA systems; Rayleigh fading channels; adaptive signal detection; blind adaptive algorithm; blind adaptive signal reception; directions of arrival; interference; multicarrier code-division multiple-access; near-far problem; noise statistics; noise suppression; optimal weight vector; weight vector; Adaptive algorithm; Additive white noise; Fading; Gaussian noise; Interference suppression; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Statistics; Timing;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.752827

Filename

752827