Low-Complexity Channel Shortening Technique for DMT-Based xDSL Modems

Young-Hwan YOU  Jong-Ho PAIK  Hyoung Kyu SONG  Jae-Kwon KIM  Won-Young YANG  Yong-Soo CHO  

IEICE TRANSACTIONS on Communications   Vol.E82-B    No.11    pp.1874-1877
Publication Date: 1999/11/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Communication Systems and Transmission Equipment
time-domain equalizer,  discrete multitone (DMT) modulation,  

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This letter is concerned with a new algorithm which can be used to design a time-domain equalizer (TEQ) for xDSL systems employing the discrete multitone (DMT) modulation. The proposed algorithm, derived by neglecting the terms which do not affect the performance of a DMT system in ARMA modeling, is shown to have a good performance compared with the previous TEQ algorithms even with a significantly lower computational complexity. In addition, the proposed algorithm does not require the channel impulse response or training sequence, since all processing is made only with the received data.