4-Block 4-phase multiplexer for MIMO-TWRC

Four multiplexer blocks are designed by four orthogonal phases and employed in Two Way Relay Channel (TWRC) network, where the nodes take advantage of two antennas. Each transmitter employs these blocks to send two independent streams. Afterwards, the relay node applies Decode-Forward (DF) relay processing to detect the streams in order to design a broadcast block. As compared with the Alamouti's single-stream blocks, the proposed new set does not experience inter-block interference and zero-block arriving. Simulation results determine new design's efficiency based on the amount of bit error rate.