Analytical model OFDM-MIMO signal in a radio channel with frequency-time selective fading

One of the main problems in modern wireless electronic communication networks is transmission and reception signals multipath propagation. Due to imperfect impulse response channel, frequency-selective fading transmitted signal occurs. This can cause waveform distortion inter-symbol interference, which seriously degrade performance system. Thus, increasing noise immunity real-world conditions one most important tasks technologies. Orthogonal frequency division multiplexing known for its resistance used reduce impact interference. Multi-antenna systems are a key technology bandwidth improving reliability. The combination these two technologies negative phenomena on difficult interference conditions. An analytical model by nonstationary radio channel network with orthogonal multi-antenna system proposed. Analytical expressions presented that allow us jointly take into account influence interchannel (the effect propagation Doppler shift signal) against background fluctuating noise. Taking factors affecting makes it possible bring closer real processes occur vast majority channels networks.