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Proceedings Paper

An efficient OFDM channel estimation method for satellite and intermediate module repeater channels in DMB system
Author(s): Min Jia; Xuemai Gu; Sebin Im; Hyungjin Choi
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Paper Abstract

A noise reduction channel estimation method is needed to improve the performance for digital multimedia broadcasting (DMB) systems with intermediate module repeater (IMR). It is based on correlation channel estimation method with the aid of the time-domain received signal and pilot signal. Channel impulse response can be derived by the output of cyclic correlation directly. Moreover, the information contained in the received signal with the cyclic prefix is made use of in the proposed method at the receiver. However, the errors caused by the coarse channel impulse response estimation degrade the performance severely. The noise reduction method is processed by using the time-averaging of channel impulse responses. The simulation results about the satellite and IMR channels show that the symbol error rate (SER) performance of the proposed method is much better than other conventional methods.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67956Z (10 November 2007); doi: 10.1117/12.775266
Show Author Affiliations
Min Jia, Harbin Institute of Technology (China)
Xuemai Gu, Harbin Institute of Technology (China)
Sebin Im, Sungkyunkwan Univ. (South Korea)
Hyungjin Choi, Sungkyunkwan Univ. (South Korea)

Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Jiaolong Wei, Editor(s)

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