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一种实用的基于导频的空时编码OFDM系统信道估计方法 被引量：1

A PRACTICAL PILOT-BASED CHANNEL ESTIMATION METHOD FOR SPACE-TIME CODED OFDM SYSTEM
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摘要 该文研究了在多径衰落信道情况下的基于导频的空时编码OFDM系统的信道估计方法,包括基于 DFT的 LS,LMMSE算法,提出了一种实用的估计方法,该方法通过优化设计的导频符号避免了复杂的矩阵求逆计算,大大降低了LS,LMMSE算法的复杂度和运算量,在性能上接近理想信道信息情况下的性能。 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.
作者 屈代明 朱光喜 陈钟麟
机构地区 华中科技大学电子与信息工程系
出处 《电子与信息学报》 EI CSCD 北大核心 2003年第11期1447-1451,共5页 Journal of Electronics & Information Technology
基金 863计划资助课题(2001AA121031)
关键词 空时编码 OFDM系统 信道估计 发射分集 LMMSE算法 Space-time code, Transmitter diversity, OFDM, Channel estimation
分类号 TN911.22 [电子电信—通信与信息系统]
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参考文献5

  • 1[1]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[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[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[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[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.

同被引文献10

  • 1Telatar E.Capacity of multiantenna gaussian channels[J].AT&T-Bell Lab Internal Tech Memo,1995.
  • 2Foschini G J.Layered space-time architecture for wireless communication in a fading environment when using multiple anternas[J].Bell Laboratiories Technical Journal,1996,1(2):741-765.
  • 3Pusane A E,Aygolu U.Power control for orthogonal space-time coding with multiple receive antennas,Personal,Indoor and Mobile Radio Communications[C]//The 13th IEEE International Symposium on,2002(9):95-99.
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  • 7Budianu C,Tong L,Channel estimation for space-time orthogonal block codes Proc[J].IEEE ICC 2001,Helsinki,Finland,2001,4:1127-1131.
  • 8Negi R,Cioffi J.Pilot tone selection for channel estimation in a mobile OFDM system[J].IEEE Trans.on Consumer Electronics,1998,44(3):1122-1128.
  • 9Liu Z,Giannakis G B,Muquet B,et al.Space-time coding for Broadband Wireless Communications[J].Wireless Systems and Mobile Computing,2000,7.
  • 10许晓红,廖桂生,李勇朝,王峰.基于分层结构的空时分组码[J].电波科学学报,2004,19(2):129-134. 被引量：12

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电子与信息学报
2003年 第11期

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