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OFDM系統(tǒng)中一種維納LMS信道跟蹤算法

白賓鋒 蔡躍明 徐友云

白賓鋒, 蔡躍明, 徐友云. OFDM系統(tǒng)中一種維納LMS信道跟蹤算法[J]. 電子與信息學(xué)報(bào), 2005, 27(11): 1699-1703.
引用本文: 白賓鋒, 蔡躍明, 徐友云. OFDM系統(tǒng)中一種維納LMS信道跟蹤算法[J]. 電子與信息學(xué)報(bào), 2005, 27(11): 1699-1703.
Bai Bin-feng, Cai Yue-ming, Xu You-yun. A Wiener LMS Channel Tracking Algorithm for OFDM Systems[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1699-1703.
Citation: Bai Bin-feng, Cai Yue-ming, Xu You-yun. A Wiener LMS Channel Tracking Algorithm for OFDM Systems[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1699-1703.

OFDM系統(tǒng)中一種維納LMS信道跟蹤算法

A Wiener LMS Channel Tracking Algorithm for OFDM Systems

  • 摘要: 結(jié)合OFDM系統(tǒng)的特點(diǎn),該文討論了維納最小均方(WLMS)算法在OFDM系統(tǒng)中應(yīng)用的可行性。推導(dǎo)了WLMS信道跟蹤算法在OFDM系統(tǒng)中的頻域表達(dá)式。利用信道響應(yīng)的頻域相關(guān)特性,在每一次迭代過(guò)程中疊加一個(gè)頻域?yàn)V波器,使算法的性能得到提高。仿真結(jié)果表明,選擇合適的步長(zhǎng),算法誤符號(hào)率性能基本接近理想估計(jì)的性能界。
  • Bingham J A C. Multicarrier modulation for data transmission: An idea whose time has come. IEEE Communication Magazine, 1990, 37(5): 5-14.[2]Hoeher P, Kaiser S, Robertson I, et al.. Two-dimensional pilot- symbol-aided channel estimation by wiener filtering. International Conference on Acoustics, Speech, and Signal Processing, Munich, Germany, 1997: 1845-1848.[3]Y Li, et al.. Robust channel estimation for OFDM system with rapid dispersive fading channels[J].IEEE Transaction on Communication.1998, 46(7):902-915[4]Van der Veen A, et.al.. Subspace-based signal analysis using singular value decomposition[J].Proc IEEE.1993, 81(9):1277-1308[5]Cai X, Akansu A N. A subspace method for blind channel identification in OFDM systems. IEEE International Conference on Communications, New Orleans, USA, July 2000: 929-933.[6]Mignone V, Morello A. CD3-OFDM: A novel demodulation scheme for fixed and mobile recivers[J].IEEE Trans on Communications.1996, 44(9):1144-1151[7]Ahlen A, Sternad M. Wiener filter design using polynomial equations[J].IEEE Trans on Signal Processing.1991, 39(11):2387-2399[8]Lindbom L, et al.. Tracking of timing-varying mobile radio channels-PartⅠ: The Wiener LMS algorithm, IEEE Trans on Communications, 2001,49(12): 2207-2217.[9]徐信, 白賓鋒, 蔡躍明. 無(wú)線OFDM系統(tǒng)中基于導(dǎo)頻信道估計(jì)方法的性能比較. 解放軍理工大學(xué)學(xué)報(bào),2003, 4(6): 10-15.[10]Jakes W C. Microwave mobile communications. New York: Wiley-Interscience, 1974, chapter 1.[11]Zheng Y R, Xiao C. Simulation models with correct statistical properties for Rayleigh fading channels[J].IEEE Trans. on Communications.2003, 51(6):920-928[12]Commission of the European Communities. Digital Land Mobile Radio Communications-COST 207. 1989.
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  • 收稿日期:  2004-11-19
  • 修回日期:  2005-04-08
  • 刊出日期:  2005-11-19

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