Transmit precoding with encoding using Zadoff-Chu sequence for MIMO-OFDM system

Transmit precoding utilizes the channel state information (CSI) to precode the data so that the effect of fading is equalized. Three simple precoding schemes for Rayleigh fading multiple-input multiple-output (MIMO) system are explained. CSI is required only at the transmitter and not at the receiver. So the computational complexity is reduced at the receiver. The bit error rate (BER) at the receiver can be reduced by encoding the data using Zadoff-Chu sequence. Simulation results illustrate the obtained BER performance. A comparison with encoding using Gold sequence is also provided.