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一種空時塊編碼OFDM系統(tǒng)中的自適應(yīng)均衡算法

邵懷宗 彭啟琮 李玉柏

邵懷宗, 彭啟琮, 李玉柏. 一種空時塊編碼OFDM系統(tǒng)中的自適應(yīng)均衡算法[J]. 電子與信息學(xué)報, 2004, 26(2): 284-290.
引用本文: 邵懷宗, 彭啟琮, 李玉柏. 一種空時塊編碼OFDM系統(tǒng)中的自適應(yīng)均衡算法[J]. 電子與信息學(xué)報, 2004, 26(2): 284-290.
Shao Huai-zong, Peng Qi-cong, Li Yu-bai. An Adaptive Equalization Algorithm in Space-Time Block Coded OFDM System[J]. Journal of Electronics & Information Technology, 2004, 26(2): 284-290.
Citation: Shao Huai-zong, Peng Qi-cong, Li Yu-bai. An Adaptive Equalization Algorithm in Space-Time Block Coded OFDM System[J]. Journal of Electronics & Information Technology, 2004, 26(2): 284-290.

一種空時塊編碼OFDM系統(tǒng)中的自適應(yīng)均衡算法

An Adaptive Equalization Algorithm in Space-Time Block Coded OFDM System

  • 摘要: 該文提出了一種適用于Alamouti塊編碼的多天線發(fā)射的OFDM系統(tǒng)的自適應(yīng)均衡算法。該算法充分利用了Alamouti編碼的正交特性和多發(fā)射天線的OFDM系統(tǒng)特點,通過靈活的變換對接收信號進(jìn)行等價的表示;通過對П矩陣求逆的研究使塊最小二乘遞推算法(BRLS)中的2K2K的矩陣求逆分解為K個22矩陣的求逆,從而降低了運算量和接收機(jī)的復(fù)雜度。計算機(jī)仿真結(jié)果證明了該自適應(yīng)均衡算法的有效性和快速收斂性。
  • Weinstein S B, Ebert P M. Data transmission by frequency division multiplexing using the discrete Fourier transform[J].IEEE Trans. on Commun. Technol.1971, 19(10):628-634[2]Cimini L J, Jr., Daneshrad B, Sollenberger N R. Clustered OFDM with transmitter diversity and coding. in Proc. 1996 IEEE Global Telecommunications Conf. London, U.K, 1996: 703-707.[3]Mignone V, Morello A. CD3-OFDM: A novel demodulation scheme for fixed and mobile receivers.IEEE Trans. on Commun., 1996, COM-44(9): 1144-1151.[4]Van de Beek J J, Edfors O, Sandell M, Wilson S K, Borjesson P O. On channel estimation in OFDM systems. in Proc. 45th IEEE Vehicular Technology Conf., Chicago, IL, 1995: 815-819.[5]Moon J K, Chio S. Performance of channel estimation methods for OFDM systems in multipath fading channels[J].IEEE Trans. on Consumer Electronics.2000, 46(1):161-170[6]Hoeher P, Kaiser S, Robertson P. Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering. In Proc. 1997 IEEE Int. Conf. ASSP, Miinich, Germany, 1997: 1845-1848.Hmimy H H. Channel estimation based on coded pilot for OFDM. in Proc. 47th IEEE Global Telecomm. Conf., Phoenix, AZ, May 1997: 1375-1379.[7]Edfors O, Sandell M. OFDM channel estimation by singular value decomposition. IEEE Trans.on Commun., 1998, COM-46(7): 931-939.[8]Li Ye, Cimini L J, Jr., Sollengerger N R. Robust channel estimation for OFDM system with rapid dispersive fading channels. IEEE Trans. on Commun., 1998, COM-46(7): 902-915.[9]Agrawal D, Tarokh V, Naguib A, Seshadri N. Space-time coded OFDM for high data rate wireless communication over wideband channels. in Proc. IEEE Vehicular Technology Conf., Ottawa Cananda, March 1998: 2232-2236.[10]Li Ye(Geoffrey), Seshadri N, Aryavisitakul S. Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels[J].IEEE J. on Selectel Areas in Commun.1999, 17(3):461-471[11]Tarokh V, Seshadri N, Calderbank A R. Space-time codes for high data rate wireless communication: Performance analysis and code construction. IEEE Trans. on Info. Theory, 1998, IT-44(3):744-765.
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出版歷程
  • 收稿日期:  2002-08-14
  • 修回日期:  2003-03-27
  • 刊出日期:  2004-02-19

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