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http://dx.doi.org/10.6109/jkiice.2007.11.3.600

Design of LMS based adaptive equalizer using Discrete Multi-Wavelet Transform  

Choi, Yun-Seok (삼성전자 네트워크사업부)
Park, Hyung-Kun (한국기술교육대학교 정보기술공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.11, no.3, 2007 , pp. 600-607 More about this Journal
Abstract
In the next generation mobile multimedia communications, the broad band shot-burst transmissions are used to reduce end-to-end transmission delay, and to limit the time variation of wireless channels over a burst. However, training overhead is very significant for such short burst formats. So, the availability of the short training sequence and the fast converging adaptive algorithm is essential in the system adopting the symbol-by-symbol adaptive equalizer. In this paper, we propose an adaptive equalizer using the DWMT (discrete multi-wavelet transform) and LMS (least mean square) adaptation. The proposed equalizer has a faster convergence rate than that of the existing transform-domain equalizers, while the increase of computational complexity is very small.
Keywords
wavelet transform; least mean square; adaptive equalizer; DMWT;
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