BER performance analysis of Cooperative MIMO system with two-way relay using physical network coding

Abstract

Cooperative Multi-Input Multi-output (CMIMO) is an extension to cooperative communication. It promises significant improvements in spectral efficiency and network coverage. It is a major candidate for Fourth generation wireless communication system. The use of Two-way Relay Communication (TWRC) with the MIMO system helps the communication to take place at a faster rate and improve the spectral efficiency of the system. In this paper, we study the BER performances of the CMIMO system using two-way relay under Rayleigh flat fading channel. The relay employs Equalize-and-Forward (EF) and Joint Decode-and-Forward (JDF) relaying protocols. The MIMO system uses spatial multiplexing at the transmitter, the receiver uses Minimum Mean Square Error (MMSE) linear signal detection method. Spatial multiplexing is use to increase the data rate of the system. CMIMO uses Alamouti coding at the transmitter enhancing the BER performance of the system.