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Complexity Reduced Blind Subspace Channel Estimation for DS/CDMA DMB Downlink  

Yang Wan-Chul (한국항공대학교 전자ㆍ정보통신ㆍ컴퓨터공학부)
Lee Byung-Seub (한국항공대학교 전자ㆍ정보통신ㆍ컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.9, 2004 , pp. 863-871 More about this Journal
Abstract
In this paper, we propose a subspace channel estimation technique for DS/CDMA DMB down link system, which can obtain reduction in numerical complexity by using of matched filtering outputs. The complexity reduction is considerable when the channel length is small and the system is moderately loaded. Previously proposed subspace-based blind channel estimation algorithm suffer from high numerical complexity for systems with large spreading gains. Although the proposed algerian suffers a slight performance loss, it becomes negligible for large observation length. Performance is evaluated through simulations and the derivation of the analytical MSE.
Keywords
Blind Channel Estimation; DMB; Subspace; Complexity Reduction;
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