A new multistage detector for synchronous CDMA communications

Author

Shi, Zhen-Liang ; Du, Weixiu ; Driessen, Peter F.

Author_Institution

Wi-LAN Inc., Calgary, Alta., Canada

Volume

44

Issue

5

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

538

Lastpage

541

Abstract

In this paper, we develop a new multistage detector to approach the optimal solution of the detection problem in a synchronous code division multiple access (CDMA) system. The transformation modifies the diagonal elements of the Hessian matrix of the quadratic likelihood function and brings the continuous minimum of the transformed function as close to the optimal solution as possible. The computational complexity is essentially linear with the number of users, except that a few computations of a quadratic function are needed

Keywords

Hessian matrices; code division multiple access; computational complexity; signal detection; synchronisation; Hessian matrix; code division multiple access system; computational complexity; diagonal elements; multistage detector; optimal solution; quadratic likelihood function; synchronous CDMA communications; transformation; transformed function; AWGN; Additive white noise; Code division multiplexing; Communications Society; Computational complexity; Decorrelation; Detectors; Matched filters; Mobile communication; Multiaccess communication;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.494295

Filename

494295