Patent ID: 7995686

Claim:
A system for canceling co-channel interference (CCI) in a cellular orthogonal frequency division multiplexing (OFDM) system, comprising: a mobile station(MS) receiver including a feedback generation unit for generating a feedback to a base station (BS) so as to control a transmission power of the transmitting frame of the BS, and a maximum likelihood estimation (MLE) CCI cancellation unit for canceling CCI signals arriving from neighbor cells; and a BS transmitter including a closed-loop power control unit for controlling the transmission power of the transmitting frame according to the feedback received from the MS such that received power of desired signal at the MS receiver is different from that of an interferer signal, wherein the MS receiver further includes a channel estimation unit for estimating channel transfer function between the BS and the MS, and the feedback generation unit includes a power ratio (PR) calculation unit for calculating a power ratio of an estimated first channel transfer function between a serving BS and the MS to an estimated second channel transfer function between an interfering BS and the MS.