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基于预测的OFDM系统迭代联合信道估计与符号检测算法

张彭 毕光国 曹秀英

张彭, 毕光国, 曹秀英. 基于预测的OFDM系统迭代联合信道估计与符号检测算法[J]. 电子与信息学报, 2005, 27(9): 1437-1440.
引用本文: 张彭, 毕光国, 曹秀英. 基于预测的OFDM系统迭代联合信道估计与符号检测算法[J]. 电子与信息学报, 2005, 27(9): 1437-1440.
Zhang Peng, Bi GuangGuo, Cao XiuYing. An Iterative Joint Channel Estimation and Symbol Detection Algorithm Based on Prediction for OFDM Systems[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1437-1440.
Citation: Zhang Peng, Bi GuangGuo, Cao XiuYing. An Iterative Joint Channel Estimation and Symbol Detection Algorithm Based on Prediction for OFDM Systems[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1437-1440.

基于预测的OFDM系统迭代联合信道估计与符号检测算法

An Iterative Joint Channel Estimation and Symbol Detection Algorithm Based on Prediction for OFDM Systems

  • 摘要: 该文在现有的OFDM系统联合迭代信道估计与符号检测算法的基础上,根据信道响应的时域相关性,将预测方法引入迭代信道估计,对其进行改进.提出一类基于对初始信道估计值进行预测的迭代信道估计算法.进而分别用两种预测方法进行仿真并与传统迭代算法进行比较.仿真结果表明:该方法与传统算法相比,加快了迭代收敛速度,降低了系统误码率.在复杂度增加不大的前提下,提高了系统性能.
  • Li Ye. Pilot-symbol-aided channel estimation for OFDM in wireless systems[J].IEEE Trans. on Vehicular Technology.2000,49(4):1207-[2]Moreili M, Mengali U. A comparison of pilot-aided channel estimation methods for OFDM systems[J].IEEE Trans. on Signal Processing.2001, 49(12):3065-[3]Edfords O, Sandell M, Van De Beek, Wilson S K, Boriesson P O.OFDM channel estimation by singular value decomposition,IEEE Trans. on Communications, 1998, 46(7): 931 - 939.[4]Edfords O, Sandell M, Van De Beek, et al.. Analysis of DFT-based channel estimators for OFDM[J].Wireless Personal Communications.2000, 12(1):55-[5]Park Seung Young, Kim Yeun Gu, Kang Chung Gu. Iterative receiver for joint detection and channel estimation in OFDM systems under mobile radio channels[J].IEEE Trans. on Vehicular Technology.2004, 53(2):450-[6]Han Bing, Wang Jianming, Gao Xiqi, et al.. An iterative joint channel estimation and symbol detection algorithm for OFDM system[J]. Journal of China Institute of Communications, 2003,24(8): 58 - 64.[7]Han Bing, Gao Xiqi, You Xiaohu, Wang Jianming, Costa E. An iterative joint channel estimation and symbol detection algorithm applied in OFDM system with high data to pilot power ratio.IEEE International Conference on Communications, 11 - 15 May2003, vol.3:2076 - 2080.[8]Hoeher P. A statistical discrete-time model for the WSSUS multipath channel[J].IEEE Trans. on Vehicular Technology.1992,41(4):461-[9]Jacks W C. Microwave Mobile Communications. New York:wiley, 1974, chapterl: 13 - 77.
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出版历程
  • 收稿日期:  2004-07-01
  • 修回日期:  2004-10-15
  • 刊出日期:  2005-09-19

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