Intersymbol and intercarrier interference canceller for multi-carrier modulation receivers

Multi-carrier modulation receivers are susceptible to performance degradation due to intersymbol and intercarrier interference. We present a scheme that modifies the conventional single-tap frequency-domain equalizer into a multi-tap equalizer that can be used to cancel both intersymbol and intercarrier interference while preserving the function of the channel equalization. We demonstrate a method to obtain the optimal coefficients that maximizes the signal-to-noise ratio for each tone. The proposed scheme can be incorporated straightforwardly into conventional multi-carrier modulation receivers, while offering flexibility to allow tradeoff between performance and computation cost.