Patent ID: 8064511

Claim:
An equalization apparatus, for receiving a received signal from a transmitter via a transmission channel, wherein the transmission channel has a plurality of delay paths, and the delay paths are at least grouped into a first cluster and a second cluster, the equalization apparatus comprising: a channel estimation unit, for estimating gains of the delay paths corresponding to the first cluster, and gains of the delay paths corresponding to the second cluster; a weight calculation unit, for performing a minimum mean square error (MMSE) algorithm on the gains of the delay paths corresponding to the first cluster and the second cluster, so as to obtain a plurality of first weights and a plurality of second weights; a first equalizer, for equalizing the received signal according to the first weights to obtain a first equalized signal; and a second equalizer, for equalizing the received signal according to the second weights to obtain a second equalized signal, wherein the received signal corresponding to a time index m is represented by r[m], and the number of the first weights is F respectively represented as w 1,0 , w 1,1 , w 1,2 , . . . , w 1,F−1 , and the first equalizer comprises: a plurality of first delay units, for sequentially delaying the received signal r[m] for the unit time, and respectively outputting a plurality of first delayed signals r[m−1], r[m−2], . . . , r[m−F+1]; a plurality of first multiplication units, for respectively multiplying the received signal r[m] and the first delayed signals r[m−1], r[m−2], . . . , r[m−F−1] with conjugations of the first weights w 1,0 *, w 1,1 *, w 1,2 *, . . . , w 1,F−1 * to obtain a plurality of first multiplied signals w 1,0 *·r[m], w 1,1 *·r[m−1], w 1,2 *·r[m−2], . . . , w 1,F−1 *·r[m−F+1]; and a first adder, for adding the first multiplied signals w 1,0 *·r[m], W 1,1 *·r[m−1], w 1,2 *·r[m−2], . . . , w 1,F−1 *·r[m−1] to obtain the first equalized signal.