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利用補(bǔ)零信息的單載波塊傳輸盲信道估計(jì)方法

李軍,  廖桂生,  郭慶華

李軍, 廖桂生, 郭慶華. 利用補(bǔ)零信息的單載波塊傳輸盲信道估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1446-1449.
引用本文: 李軍, 廖桂生, 郭慶華. 利用補(bǔ)零信息的單載波塊傳輸盲信道估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1446-1449.
Li Jun, Liao GuiSheng, Guo QingHua. Blind Channel Estimation for Single-Carrier Block Transmission by Exploiting Zero-Padding[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1446-1449.
Citation: Li Jun, Liao GuiSheng, Guo QingHua. Blind Channel Estimation for Single-Carrier Block Transmission by Exploiting Zero-Padding[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1446-1449.

利用補(bǔ)零信息的單載波塊傳輸盲信道估計(jì)方法

Blind Channel Estimation for Single-Carrier Block Transmission by Exploiting Zero-Padding

  • 摘要: 該文提出了一種針對(duì)單載波塊傳輸(SCBT)系統(tǒng)的信道估計(jì)方法.該方法利用單載波塊傳輸系統(tǒng)中的補(bǔ)零(ZP)信息,在頻域?qū)崿F(xiàn)了頻率選擇性信道基于子空間的盲估計(jì).文中同時(shí)給出了所提方法的辨識(shí)條件.該方法性能優(yōu)于過(guò)采樣信道估計(jì)方法,且對(duì)信道階數(shù)過(guò)估計(jì)不敏感.計(jì)算機(jī)仿真和分析驗(yàn)證了所提方法的有效性.
    Abstract: A subspace-based channel estimation method for Single-Carrier Block Transmission （SCBT） systems is presented, which estimates frequency-selective channel blindly in frequency domain, based on zero-padding technology in SCBT system. Sufficient conditions for identifiability are also given. The performance of this method is better than that of conventional oversampling methods, and it is robust to over-estimated channel order. Finally, computer simulations confirm its efficiency.
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  • Wang Z, Giannakis G B. Linearly precoded or coded OFDM against wireless channel fades? in Proc. Workshop Signal Processing Advances in Wireless Communications, Taoyuan,Taiwan, 2001:267 - 270.[2]Scaglione A, Giannakis G B, Barbarossa S. Redundant filterbank precoders and equalizers-Part Ⅰ: Unification and optimal designs[J].IEEE Trans. on Signal Processing.1999, 47(7):1988-[3]Wang Z, Ma X L, Giannakis G B. OFDM or single-carrier block transmissions? IEEE Trans. on Communications, 2004, 52(3):380 - 394.[4]Ding Z, Li Y. On channel identification based on second-order cyclic spectra[J].IEEE Trans. on Signal Processing.1994, 42(5):1260-[5]Moulines E, Duhamel P, Cardoso J, Mayrargue S. Subspace methods for the blind identification of multichannel FIR filters[J].IEEE Trans. on Signal Processing.1995, 43(2 ):516-[6]Serpedin E, Giannakis G B. Blind channel identification and equalization with modulation-induced cyclostationarity[J].IEEE Trans. on Signal Processing.1998, 46(7):1930-[7]Roy S, Li C Y. A subspace blind channel estimation method for OFDM systems without cyclic prefix[J].IEEE Trans. on Wireless Communication.2002, 1(10):572-[8]Cai X, Akansu A N. A subspace method for blind channel identification in OFDM systems. in Proc. ICC2000, New Orleans,LA, 2000:929 - 933.[9]Li C Y, Roy S. Subspace-based blind channel estimation for OFDM by exploiting virtual carrier[J].IEEE Trans. on Wireless Communication.2003, 2(1):141-[10]Czylwik A. Comparison between adaptive OFDM and singlecarrier modulation with frequency-domain equalization, in Proc.Vehicular Technology Conf., Phoenix, AZ, 1997, 2:865 - 869.[11]Scaglione A, Giannakis G B, Barbarossa S. Redundant filterbank precoder and equalizers part Ⅱ: blind channel estimation,synchronization, and direct equalization[J].IEEE Trans. on Signal Processing.1999, 47(7):2007-
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出版歷程
  • 收稿日期:  2004-04-09
  • 修回日期:  2004-08-11
  • 刊出日期:  2005-09-19

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