Blind zero forcing equalization of multichannel nonlinear CDMA systems

Author

Redfern, Arthur J. ; Zhou, G. Tong

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

49

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

2363

Lastpage

2371

Abstract

Code division multiple access (CDMA) has emerged as a popular format for wireless communication systems. As a result of intersymbol interference (ISI) and nonlinearities, the performance of CDMA systems can suffer. In this paper, we propose a blind equalizer for CDMA systems with Volterra (nonlinear) channels. The equalizer requires multiple observations at the receiver, which are obtained through oversampling or an antenna array, and a knowledge of the code of the desired user. Zero forcing equalization is possible in the noise-free case. Simulations demonstrate the performance of the equalizer under a variety of operating conditions

Keywords

antenna arrays; array signal processing; blind equalisers; code division multiple access; radio receivers; signal sampling; ISI; Volterra channels; antenna array; blind zero forcing equalization; code division multiple access; intersymbol interference; multichannel nonlinear CDMA systems; noise-free case; nonlinear channels; nonlinearities; oversampling; performance; wireless communication systems; Antenna arrays; Bandwidth; Blind equalizers; Intersymbol interference; Multiaccess communication; Receiving antennas; Satellites; System performance; Transmitters; Wireless communication;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.950791

Filename

950791