An efficient decoding technique for CDMA communication systems based on the expectation maximization algorithm

Author

Borran, M.J. ; Nasiri-Kenari, M.

Author_Institution

Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran

Volume

3

fYear

1996

fDate

22-25 Sep 1996

Firstpage

1305

Abstract

We present a computationally efficient algorithm for detection of superimposed signals in DS-CDMA communication systems. Using the EM algorithm we decompose the multiuser detection problem into a series of single user problems. The resultant structure includes the multistage detector of Varanasi et al. (1991) and the conventional single user detector (or linear decorrelator of Lupas et al. (1989)) as special cases

Keywords

code division multiple access; computational complexity; decoding; maximum likelihood detection; spread spectrum communication; DS-CDMA communication systems; EM algorithm; computationally efficient algorithm; efficient decoding technique; expectation maximization algorithm; linear decorrelator; multiuser detection problem; single user problems; superimposed signals detection; Computational complexity; Covariance matrix; Decorrelation; Detectors; Gaussian noise; Maximum likelihood decoding; Maximum likelihood detection; Multiaccess communication; Multiuser detection; Signal detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on

Conference_Location

Mainz

Print_ISBN

0-7803-3567-8

Type

conf

DOI

10.1109/ISSSTA.1996.563517

Filename

563517