A matrix-algebraic approach to successive interference cancellation in CDMA

Author

Rasmussen, Lars K. ; Lim, Teng J. ; Johansson, Ann-Louise

Author_Institution

Dept. of Comput. Eng., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

48

Issue

1

fYear

2000

fDate

1/1/2000 12:00:00 AM

Firstpage

145

Lastpage

151

Abstract

In this paper, we describe linear successive interference cancellation (SIC) based on matrix-algebra. We show that linear SIC schemes (single stage and multistage) correspond to linear matrix filtering that can be performed directly on the received chip-matched filtered signal vector without explicitly performing the interference cancellation. This leads to an analytical expression for calculating the resulting bit-error rate which is of particular use for short code systems. Convergence issues are discussed, and the concept of ε-convergence is introduced to determine the number of stages required for practical convergence for both short and long codes

Keywords

code division multiple access; convergence of numerical methods; digital filters; error statistics; interference suppression; land mobile radio; matrix algebra; ϵ-convergence; CDMA; bit-error rate; linear SIC schemes; linear matrix filtering; matrix-algebraic approach; multistage; received chip-matched filtered signal vector; short code systems; single stage; successive interference cancellation; Bit error rate; Convergence; Detectors; Filtering; Interference cancellation; Multiaccess communication; Multiple access interference; Nonlinear filters; Silicon carbide; Vectors;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.818882

Filename

818882