The effect of the Doppler scatter spectrum on the value of the OFDM - signal interchannel interference

This article considers the negative impact of simultaneous fast Rayleigh fading and mismatch of subchannel frequencies between receiving and transmitting sides of the channel, leading to violations of orthogonality between individual signals of OFDM - system subchannels. Herewith the amount of interchannel interference (ICI) between individual subchannels on the receiving side is considered as the quantitative measure of the impact of these factors. The study also evaluates the influence of simultaneous impact of fast fading and frequency shifts on values of the inter-channel interference and obtained corresponding dependency graphs.