A New CDMA Multiuser Coherent Detection Scheme in Uncorrelated Rayleigh Fading Channels

范云军; 李道本

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A New CDMA Multiuser Coherent Detection Scheme in Uncorrelated Rayleigh Fading Channels

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- A New CDMA Multiuser Coherent Detection Scheme in Uncorrelated Rayleigh Fading Channels
- Acta Electronica Sinica Issue 1, Pages: 65-69(1998)
- 作者机构：
  
  1. 北京邮电大学信息工程系!北京
  2. 100876
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914.53
- Published：1998
- 稿件说明：
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[1]范云军,李道本.不相关瑞利衰落信道中的一种新型CDMA多用户相干检测方案[J].电子学报,1998(01):65-69.

范云军, 李道本. A New CDMA Multiuser Coherent Detection Scheme in Uncorrelated Rayleigh Fading Channels[J]. Acta Electronica Sinica, 1998, (1): 65-69.
[1]范云军,李道本.不相关瑞利衰落信道中的一种新型CDMA多用户相干检测方案[J].电子学报,1998(01):65-69. DOI：

范云军, 李道本. A New CDMA Multiuser Coherent Detection Scheme in Uncorrelated Rayleigh Fading Channels[J]. Acta Electronica Sinica, 1998, (1): 65-69. DOI：

摘要

本文以线性解相关多用户检测为基础，提出了一种新的相干CDMA多用户检测方案．这种方案引入辅助的连续导频，使相干估计和话音间歇内的定时容易实现．引入自动时延控制并减小相关时间，使相关结果与前后码元无关．采用话音激活，又使解相关矩阵的阶降低65％，求逆计算复杂性降低95．71％．理论分析和模拟结果证明本方案不但计算复杂性大大降低，系统性能也得到了改善．

Abstract

Based on the decorrelating linear multiuser detection （DCLMUD） scheme

a new coherent CDMA multiuser scheme is pmposed. It introduces aided continuous pilot to implement the coherent estimation and timing recovery. In addition

auto time delay control is inedced and the cedation time is rcduced to make the correlation independent on the past and future sndls. By adapting voice activation

the order of decorrelating matrix is reduced by 65 %

computahon complexity is reduced by 95 .71%. The theoretical analysis and simulation results prove that not only the complexity of the proposed scheme is reduced significantly

but also its performance is improved.

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