Per tone equalization for DMT-based systems
Van Acker, K.; Leus, G.; Moonen, M.; van de Wiel, O.; Pollet, T.
Communications, IEEE Transactions on
Volume 49, Issue 1, Jan 2001 Page(s):109 - 119
Digital Object Identifier   10.1109/26.898255
Summary:An alternative receiver structure is presented for discrete multitone-based systems. The usual structure consisting of a (real) time-domain equalizer in combination with a (complex) 1-tap frequency-domain equalizer (FEQ) per tone, is modified into a structure with a (complex) multitap FEQ per tone. By solving a minimum mean-square-error problem, the signal-to-noise ratio is maximized for each individual tone. The result is a larger bit rate while complexity during data transmission is kept at the same level. Moreover, the per tone equalization is shown to have a reduced sensitivity to the synchronization delay

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