Patent ID: 7864905

Claim:
An apparatus for equalizing a received signal to generate an equalized signal, comprising: a channel estimator for generating channel estimation values Hâ€² j,k and Hâ€³ j,k , wherein j denotes a band index in a multi-carrier communication system and k denotes a subcarrier index in the band j, according to a preamble symbol in the received signal and for generating a channel response value H j,k according to an average value of the channel estimation values, wherein H j,k =Hâ€² j,k +Hâ€³ j,k /2; an equalization circuit for equalizing the received signal according to the channel response value and an interference power estimate to generate the equalized signal; and an interference power estimation circuit for generating the interference power estimate according to a hard decision value, the channel estimation values, and the received signal; wherein the hard decision value corresponds to the equalized signal.