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OFDM系统中迭代信道估计和解码研究

马章勇 刘雅然 赵春明 尤肖虎

马章勇, 刘雅然, 赵春明, 尤肖虎. OFDM系统中迭代信道估计和解码研究[J]. 电子与信息学报, 2003, 25(11): 1441-1446.
引用本文: 马章勇, 刘雅然, 赵春明, 尤肖虎. OFDM系统中迭代信道估计和解码研究[J]. 电子与信息学报, 2003, 25(11): 1441-1446.
Ma Zhangyong, Liu Yaran, Zhao Chunming, You Xiaohu . The joint inerative channel estimation and decoder algorithm for the ofdm system[J]. Journal of Electronics & Information Technology, 2003, 25(11): 1441-1446.
Citation: Ma Zhangyong, Liu Yaran, Zhao Chunming, You Xiaohu . The joint inerative channel estimation and decoder algorithm for the ofdm system[J]. Journal of Electronics & Information Technology, 2003, 25(11): 1441-1446.

OFDM系统中迭代信道估计和解码研究

The joint inerative channel estimation and decoder algorithm for the ofdm system

  • 摘要: 该文针对 QPSK调制的 OFDM系统,根据 Turbo码的迭代解码原理,利用其软信息对信道估计的精度进行改进。同时为了防止由于解码器判决不准确造成误差的传播,提出了一种加权迭代估计算法,仿真结果表明,该方法与传统方法相比,能较显著地提高系统的性能。
  • M.C. Valenti, B. D. Woerner, Iterative channel estimation and decoding of pilot symbol assisted Turbo codes over flat-fading channels, IEEE J. on SAC, 2001, 19(9), 1697-1705.[2]J.K. Moon, S. I. Choi, Performance of channel estimation methods for OFDM systems in a multiple fading channels, IEEE Trans. on Consumer Electronics, 2000, 46(1), 161-170.[3]F. Said, A. H. Aghvami, Two dimensional pilot assisted channel estimation for turbo coded OFDM systems, Turbo Codes in Digital Broadcasting, IEE Colloquium on, London, 1999, 19/1-19/6.[4]E. Jaffrot, M. Siala, Turbo channel estimation for OFDM systems on highly time and frequency selective channels, Proc. IEEE ICASSP00. Istanbul, Turkey, 2000, Vol.5, 2977-2980.[5]Hsuan-Jung Su and E. Geraniotis, Low-complexity joint channel estimation and decoding for pilot symbol-assisted modulation and multiple differential detection systems with correlated Rayleigh fading, IEEE Trans. on Commun., 2002, 50(2), 249-261.[6]Ye Li, Pilot-symbol-aided channel estimation for OFDM in wireless systems, IEEE Trans. on Vehicular Technology, 2000, 49(7), 1207-1215.[7]H. Rohling, T. May, OFDM systems with differential modulation schemes and turbo decoding techniques, Proc. Broadband Communications, Zurich, 2000, 251-255.[8]H. Hisata, J. Horikoshi, Turbo codes with RLS-MLSE channel estimation in the co-channel interference environment, PIMRC, London, 2000, Vol. 2,903-907.[9]Q. Li, C. N. Georghiades, X. Wang, An iterative decoding scheme for pilot-assisted modulation in fading channels, GLOBECOM00. IEEE, San Francisco, 2000, Vol. 2,807-811.
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出版历程
  • 收稿日期:  2002-07-01
  • 修回日期:  2002-10-11
  • 刊出日期:  2003-11-19

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