O3BPSK-based Linear Decorrelating Detector for Asynchronous DS/CDMA Systems over Frequency-Selective Rayleigh Fading Channels

被引：0

作者：

Chia-Hsin Cheng

Jen-Yung Lin

Chao-Kai Wen

Jyh-Horng Wen

机构：

[1] Chaoyang University of Technology,The Department of Computer and Communication Engineering

[2] Da-Yeh University,The Department of Computer Science and Information Engineering

[3] National Chung Cheng University,The Institute of Electrical Engineering

[4] Tunghai University,The Department of Electrical Engineering

来源：

Wireless Personal Communications | 2009年 / 48卷

关键词：

DS/CDMA; Near–far resistance; Multi-user detection; Rake receiver; Multi-path fading;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, a convenient signaling scheme, called orthogonal on–off BPSK (O3BPSK), along with a simple one-shot linear decorrelating detector (LDD) and a whitening Rake bank, is proposed for near–far resistant detection in asynchronous DS/CDMA systems. Based on the maximum multi-path spreading delay, a minimum duration of “off” is suggested, during which the temporally adjacent bits (TABs) that contain multi-user interference (MUI) and inter-symbol interference (ISI) from different users at the receiver are decoupled. The O3BPSK signaling scheme is combined with the whitening Rake receiver to preserve multi-path diversity gain in multi-path fading CDMA channels. The scheme offers low complexity, no detection delay, near–far resistance, and compensation for fading channels.

引用

页码：311 / 325

页数：14

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