Novel multiple-input multiple output precoding techniques with improved bit error rate performance

In modern wireless communication Multiple-Input Multiple Output (MIMO) takes part an important role in the two developing standards IEEE 802.16m and 3GPP LTE-A in meeting the 4G requirements. MIMO enhances the necessary throughput and BER performance by utilizing the channel state information at the transmitter side (CSIT). Improved error performance and reduced complexity of a MIMO system can be achieved by introducing precoder in the transmitter side. This paper provides a brief overview of the linear and non-linear precoding techniques in terms of theoretical implementation. The performance of MIMO technique is analyzed in terms of BER and capacity. MIMO-OFDM simulink model is used to compare the performances of various precoding techniques.