[1]彭岳星,吴镇扬,王维新,等.频率选择性时变信道下OFDM DS-CDMA系统上行链路联合检测算法[J].东南大学学报(自然科学版),2004,34(3):297-300.[doi:10.3969/j.issn.1001-0505.2004.03.003]
 Peng Yuexing,Wu Zhenyang,Wang Weixin,et al.Joint detection algorithm for uplink of OFDM DS-CDMA systems over frequency-selective time-varying channels[J].Journal of Southeast University (Natural Science Edition),2004,34(3):297-300.[doi:10.3969/j.issn.1001-0505.2004.03.003]
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频率选择性时变信道下OFDM DS-CDMA系统上行链路联合检测算法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第3期
页码:
297-300
栏目:
信息与通信工程
出版日期:
2004-05-20

文章信息/Info

Title:
Joint detection algorithm for uplink of OFDM DS-CDMA systems over frequency-selective time-varying channels
作者:
彭岳星 吴镇扬 王维新 刘陈
东南大学无线电工程系, 南京 210096
Author(s):
Peng Yuexing Wu Zhenyang Wang Weixin Liu Chen
Department of Radio Engineering, Southeast University, Nanjing 210096, China
关键词:
正交频分复用 码分多址 多用户检测 部分并行干扰消除 信道估计
Keywords:
OFDM CDMA multi-user detection partial parallel interference cancellation channel estimation
分类号:
TN929.533
DOI:
10.3969/j.issn.1001-0505.2004.03.003
摘要:
针对频率选择性时变信道下的正交频分复用直接序列码分多址(OFDM DS-CDMA)系统的上行链路,提出一种联合检测算法.它使用改进的部分并行干扰消除算法实现多用户检测,并在导频辅助下估计时变信道.在不同的车载速度下检验本文算法的性能,仿真结果表明:在车速不超过120 km/h时,本文算法能有效抑制多址干扰; 当车辆速度超过250 km/h时,必须对多普勒效应引起的频率偏移进行估计并纠正以消除信道间干扰.
Abstract:
A joint detection algorithm is proposed for the uplink of OFDM DS-CDMA(direct sequence code division multiple access)systems over frequency-selective time-varying(TV)channels. The multi-user detection is realized by the modified partial parallel interference cancellation(PPIC), and estimates TV channels aided by pilots. The proposed algorithm is tested by simulations under different work conditions, and simulation results show that it can effectively compress multiple access interference(MAI)and correctly estimate TV channels when the speed of terminals is below 120 km/h. While the speed is over 250 km/h, the frequency offset caused by Doppler effect must be estimated and corrected to delete inter-carrier interference(ICI).

参考文献/References:

[1] Dinis M,Feernandes J.Provision of sufficient transmission capacity for broadband mobile multimedia:a step toward 4G [J].IEEE Communication Magazine, 2001,39(8):46-54.
[2] Lim H.Beyond 3G [cellular communications] [J].IEEE Potentials, 2002, 21(4):18-23.
[3] Wang Z,Giannakis G B.Wireless multicarrier communications where Fourier meets Shannon [J]. IEEE Signal Processing Magazine, 2000,17(3):29-48.
[4] Rohling H,May T,Bruninghaus K,et al.Broad-band OFDM radio transmission for multimedia applications [J].Proc IEEE, 1999,87(10):1778-1788.
[5] Keller T,Hanzo L.Adaptive multicarrier modulation:a convenient framework for time-frequency processing in wireless communications [J].Proc IEEE, 2000,88(5):611-640.
[6] Guo D,Rasmussen L K,Lim T J.MMSE-based linear parallel interference cancellation in long-code CDMA [A].In:Proc on Broad Communications [C].Zurich,Switzerland,2000.31-37.
[7] Xue G,Weng J,Le-Ngoc T,et al.Adaptive multistage parallel interference cancellation for CDMA over multipath fading channels [A].In:Proc of VTC’99 [C].Houston,1999.1251-1255.
[8] Choi Y S,Voltz P J,Cassara F A.ML estimation of carrier frequency offset for multicarrier signals in Rayleigh fading channels [J].IEEE Trans Veh Tech, 2001,50(2):644-655.
[9] Ciblat P,Loubaton P,Serpedin E,et al.Performance analysis of blind carrier frequency offset estimators for noncircular transmissions through frequency-selective channels [J].IEEE Trans Signal Proc, 2002,50(1):130-139.

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备注/Memo

备注/Memo:
基金项目: 国家高技术研究发展计划(863计划)资助项目(2001AA123015).
作者简介: 彭岳星(1973—), 男, 博士生; 吴镇扬(联系人), 男, 教授, 博士生导师, zhenyang@seu.edu.cn.
更新日期/Last Update: 2004-05-20