Code constrained CMA-based multirate multiuser detection

Author

Xu, Zhengyuan ; Liu, Ping

Author_Institution

Dept. of Electr. Eng., California Univ., Riverside, CA, USA

Volume

2

fYear

2001

fDate

4-7 Nov. 2001

Firstpage

1455

Abstract

In this paper, a constant modulus algorithm (CMA) based multiuser detector is proposed for multirate communications over unknown multipath channels. We impose multiple linear constraints on the detector to guarantee no cancellation of the desired signal, while suppressing the intersymbol interference (ISI) and multiuser interference (MUI). The constraint parameters can be either pre-selected or jointly optimized with the detector. Under certain conditions on the constraints, the proposed algorithm enjoys global convergence.

Keywords

adaptive equalisers; code division multiple access; convergence of numerical methods; interference suppression; intersymbol interference; multipath channels; multiuser channels; CDMA; CMA; ISI; MUI; adaptive minimum output energy algorithm; code constrained; constant modulus algorithm multiuser detector; global convergence; intersymbol interference suppression; jointly optimized constraint parameters; multiple linear constraints; multirate communications; multiuser interference; pre-selected constraint parameters; signal noncancellation; unknown multipath channels; Additive white noise; Delay; Equalizers; Filtering; Integrated circuit noise; Multiaccess communication; Multiuser detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7147-X

Type

conf

DOI

10.1109/ACSSC.2001.987730

Filename

987730