Linear multiuser receivers in random spreading with rake combining: Turbo-coded system performance

Document Type

Conference Proceeding

Publication Date

12-1-2001

Abstract

In this paper, we analyze the performance of linear CDMA multiuser receivers with rake combining in multipath fading channel and compare their BER performances in turbo-coded system. To simplify the analysis, we used similar approach to the standard Gaussian approximation. We assume the use of long spreading sequences for conventional matched filter detector while short spreading sequences for linear multiuser receivers. To obtain the PDF of the combiner output SNIR, a simplified SNIR expression is derived by averaging over all possible combination of time and phase delays but conditioned on the channel gain and the random cross-correlations of spreading waveforms. Then, we evaluate their BER performances in a turbo-coded system by taking average over the output SNIR. The approach shown here can provide helpful insight for system design and planning in 3G wireless systems.

Identifier

0035573163 (Scopus)

Publication Title

Conference Record of the Asilomar Conference on Signals Systems and Computers

ISSN

10586393

First Page

1748

Last Page

1752

Volume

2

This document is currently not available here.

Share

COinS