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一種實用的基于導(dǎo)頻的空時編碼OFDM系統(tǒng)信道估計方法

屈代明,  朱光喜,  陳鐘麟

屈代明, 朱光喜, 陳鐘麟. 一種實用的基于導(dǎo)頻的空時編碼OFDM系統(tǒng)信道估計方法[J]. 電子與信息學(xué)報, 2003, 25(11): 1447-1451.
引用本文: 屈代明, 朱光喜, 陳鐘麟. 一種實用的基于導(dǎo)頻的空時編碼OFDM系統(tǒng)信道估計方法[J]. 電子與信息學(xué)報, 2003, 25(11): 1447-1451.
Qu Daiming, Zhu Guangxi, Chen Zhonglin. A practical pilot-based channel estimation method for space-time coded ofdm system[J]. Journal of Electronics & Information Technology, 2003, 25(11): 1447-1451.
Citation: Qu Daiming, Zhu Guangxi, Chen Zhonglin. A practical pilot-based channel estimation method for space-time coded ofdm system[J]. Journal of Electronics & Information Technology, 2003, 25(11): 1447-1451.

一種實用的基于導(dǎo)頻的空時編碼OFDM系統(tǒng)信道估計方法

A practical pilot-based channel estimation method for space-time coded ofdm system

  • 摘要: 該文研究了在多徑衰落信道情況下的基于導(dǎo)頻的空時編碼OFDM系統(tǒng)的信道估計方法，包括基于DFT的LS，LMMSE算法，提出了一種實用的估計方法，該方法通過優(yōu)化設(shè)計的導(dǎo)頻符號避免了復(fù)雜的矩陣求逆計算，大大降低了LS，LMMSE算法的復(fù)雜度和運(yùn)算量，在性能上接近理想信道信息情況下的性能。
    Abstract: This paper deals with pilot-based channel estimation of space-time coded OFDM system in frequency selective channels. DFT-based LS and LMMSE method are studied. A practical channel estimation method is proposed. In proposed method the complexity of LS and LMMSE methods is greatly reduced by optimally designing the pilot symbols. And the performance demonstrated by simulation is close to idea channel information.
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  • V. Tarokh, N. Seshadri, A. R. Calderbank, Space-time codes for high data rate wireless communication: performance criterion and code construction, IEEE Trans. on Information Theory, 1998,44(2), 744-765.[2]J.J. van de Beek, O. Edfors, M. Sandell, S. K. Wilson, P. O. Borjesson, On channel estimation in OFDM systems, Proc. IEEE Vehicular Technology Conf., Chicago, IL, USA, July 1995, Vol.2,815-819.[3]Y. Li, N. Seshadri, L. Ariyavisitakul, Channel estimation for OFDM systems with transmitter diversity in mobile wireless channel, IEEE J. on Selected Areas in Communications, 1999, 17(3),461-471.[4]Won Gi Jeon, Kyung Hyun Paik, Yong Soo Cho, Two-dimensional MMSE channel estimation for OFDM systems with transmitter diversity, Vehicular Technology Conference, Atlantic City,USA, 2001 FALL, Vol.3, 1682-1685.[5]R. Negi, J. Cioffi, pilot tone selection for channel estimation in a mobile OFDM system, IEEE Trans. on Consumer Electronics, 1998, 44(3), 1122-1128.
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出版歷程
  • 收稿日期:  2002-06-24
  • 修回日期:  2002-12-11
  • 刊出日期:  2003-11-19

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