利用补零信息的单载波块传输盲信道估计方法

李军; 廖桂生; 郭庆华

利用补零信息的单载波块传输盲信道估计方法

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出版历程
- 收稿日期: 2004-04-09
- 修回日期: 2004-08-11
- 刊出日期: 2005-09-19

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

摘要

摘要: 该文提出了一种针对单载波块传输(SCBT)系统的信道估计方法.该方法利用单载波块传输系统中的补零(ZP)信息,在频域实现了频率选择性信道基于子空间的盲估计.文中同时给出了所提方法的辨识条件.该方法性能优于过采样信道估计方法,且对信道阶数过估计不敏感.计算机仿真和分析验证了所提方法的有效性.
- 单载波块传输; 子空间; 盲信道估计; 补零
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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