PN code-aided timing estimation, channel estimation and signal compensation in OFDM systems

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題名:	PN code-aided timing estimation, channel estimation and signal compensation in OFDM systems
作者:	Wen, J.-H., Lee, G.-R., Kung, T.-L., Lee, S.-H.
貢獻者:	Department of Electrical Engineering, Tunghai University
關鍵詞:	Channel estimation;OFDM systems;Pseudo-noise code;Signal compensation;Timing estimation
日期:	2010
上傳時間:	2013-05-15T09:13:49Z (UTC)
摘要:	In this paper, based on the correlation properties of the pseudo-random (PN) code, a scheme is proposed to achieve frame synchronization in the OFDM system. According to the estimated path delay time, the channel impulse response could be obtained with the proposed scheme. Then, based on the estimated channel response, the signal could be compensated through the one-tap frequency domain equalizer. Simulation results of the proposed frame synchronization scheme and channel estimation are presented in the paper. The miss probability of frame timing with the proposed frame synchronization scheme performs better than that with the moving average scheme and Beek's scheme. Besides, in the channel estimation, the estimator mean square error with the proposed algorithm is better than that with the algorithm using frequency domain pilots. Moreover, with the signal compensation by the estimated channel information, the frequency domain one-tap equalizer is used to improve the system performance. ? 2009 Elsevier Inc. All rights reserved.
關聯:	Digital Signal Processing: A Review Journal 20 (3) , pp. 860-868
顯示於類別:	[電機工程學系所] 期刊論文

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