Interference cancellation based receive scheme to combat ICI for OFDM systems

In his paper, we analyses and proposes a new receiver structure to mitigate the effect of interchannel interference (ICI) on the reception of OFDM signals. The system operates in a frequency selective Rayleigh fading channel. Interchannel interference is caused by the time variations in channel gain within OFDM symbol and leads to an error floor, which is a function of Doppler frequency. In this study, it was found that by performing parallel interference cancellation at the receiver, we were able to significantly reduce the error floor.