An efficient OFDM channel estimation method for satellite and intermediate module repeater channels in DMB system

Min Jia; Xuemai Gu; Sebin Im; Hyungjin Choi

doi:10.1117/12.775266

10 November 2007 An efficient OFDM channel estimation method for satellite and intermediate module repeater channels in DMB system

Min Jia, Xuemai Gu, Sebin Im, Hyungjin Choi

Author Affiliations +

Proceedings Volume 6795, Second International Conference on Space Information Technology; 67956Z (2007) https://doi.org/10.1117/12.775266
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

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.

Citation Download Citation

Min Jia, Xuemai Gu, Sebin Im, and Hyungjin Choi "An efficient OFDM channel estimation method for satellite and intermediate module repeater channels in DMB system", Proc. SPIE 6795, Second International Conference on Space Information Technology, 67956Z (10 November 2007); https://doi.org/10.1117/12.775266

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