[1]曾嵘,赵春明.CDMA系统中LMMSE均衡器的时延参数对其性能的影响[J].东南大学学报(自然科学版),2002,32(6):838-841.[doi:10.3969/j.issn.1001-0505.2002.06.003]
 Zeng Rong,Zhao Chunming.Effect analysis of time-delay parameter on the performance of LMMSE equalizer in CDMA systems[J].Journal of Southeast University (Natural Science Edition),2002,32(6):838-841.[doi:10.3969/j.issn.1001-0505.2002.06.003]
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CDMA系统中LMMSE均衡器的时延参数对其性能的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第6期
页码:
838-841
栏目:
信息与通信工程
出版日期:
2002-11-20

文章信息/Info

Title:
Effect analysis of time-delay parameter on the performance of LMMSE equalizer in CDMA systems
作者:
曾嵘 赵春明
东南大学移动通信国家重点实验室,南京 210096
Author(s):
Zeng Rong Zhao Chunming
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
关键词:
码分多址 线性最小均方误差均衡器 时延参数
Keywords:
CDMA systems LMMSE equalizer time-delay parameter
分类号:
TN929.533
DOI:
10.3969/j.issn.1001-0505.2002.06.003
摘要:
介绍了码分多址CDMA系统中码片级线性最小均方误差均衡器.针对时延参数的优化选取对线性最小均方误差均衡器性能的影响进行仿真分析,并同传统rake接收机的性能相比较.结果表明:在均衡器长度与信道最大多径时延相接近时,时延参数优化后的线性最小均方误差均衡器与同时延参数未经优化时相比性能有较大改善,而随着均衡器长度的增加,线性最小均方误差均衡器性能对时延参数选取的敏感性逐渐下降.
Abstract:
The chip-level linear minimum mean square error(LMMSE)equalizer in CDMA systems is introduced. The effect of time-delay parameter on the performance of LMMSE equalizer is analyzed through computer simulations. The results show that parameter optimized LMMSE equalizer gains better performance compared with LMMSE equalizer without parameter optimization when the length of equalizer approaches the maximal multi-path time delay spread. As the length of equalizer becomes larger, the sensitivity of LMMSE equalizer on time-delay parameter becomes weaker.

参考文献/References:

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[2] Kari Hooli,Markku Juntti.Inter-path interference suppression in WCDMA systems with low spreading factors[A].In: VTC’99 IEEE[C].1999.421-425.
[3] Thomas P Krauss,Michael D Zoltowski,Geert Leus.Simple MMSE equalizers for CDMA downlink to restore chip sequence:comparison to zero-forcing and rake [A].In: VTC’2000 IEEE[C].2000.2865-2868.
[4] Kari Hooli,Matti Latva-aho,Markku Juntti.Multiple access interference suppression with linear chip equalizers in WCDMA downlink receivers [A].In:Globecom’99,IEEE[C].1999.467-471.
[5] TIA/EIA/IS-2000-2.Physical layer standard for cdma2000 spread spectrum systems [EB/OL].http://www.3gpp2.org/Public-html/C.S0002-A-1.pdf.2000-09-12/2001-08-30.

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[1]宋荣方,毕光国.WCDMA上行链路空时接收机的研究[J].东南大学学报(自然科学版),2003,33(1):9.[doi:10.3969/j.issn.1001-0505.2003.01.003]
 Song Rongfang,Bi Guangguo.Study of space-time receiver in WCDMA uplink[J].Journal of Southeast University (Natural Science Edition),2003,33(6):9.[doi:10.3969/j.issn.1001-0505.2003.01.003]
[2]苏杰,胡爱群,何振亚.CDMA系统功率控制的性能分析与改进[J].东南大学学报(自然科学版),1995,25(4):1.[doi:10.3969/j.issn.1001-0505.1995.04.001]
 Su Jie,Hu,Aiqun,et al.Performance Analysis and Improving Scheme of Power COntrol in CDMA System[J].Journal of Southeast University (Natural Science Edition),1995,25(6):1.[doi:10.3969/j.issn.1001-0505.1995.04.001]

备注/Memo

备注/Memo:
基金项目: 国家“863”资助项目(863-317-03-01-02-04-20/MII-C3G-02-04-002).
作者简介: 曾嵘(1976—),男,博士生,rodney@seu.edu.cn; 赵春明(联系人),男,教授,博士生导师,cmzhao@seu.edu.cn.
更新日期/Last Update: 2002-11-20