双联合收发空间调制方案设计与性能分析

In response to the current society's increasing demand for high speed and high efficiency, a double joint transceiver spatial modulation (DJSM) scheme is proposed, which combines traditional joint transceiver spatial modulation (JSM) with double spatial modulation (DSM) for improving the system information bit rate and transmission reliability of spatial modulation (SM) system. In the proposed DJSM scheme, the transmitter carries out two independent SM processes, and the bit sequence of input information is mapped to two modulated symbols and the corresponding activated transmit antenna groups, respectively. The spectral efficiency of the DJSM system can be significantly improved. In order to distinguish the two modulated symbols, an optimal angle rotation is performed before the transmission. And the average bit error probability (ABEP) of the DJSM scheme has been derived based on the union bound technique. Simulation results show that the proposed DJSM scheme achieves much better ABEP performance compared with the traditional JSM scheme and orthogonal joint transceiver spatial modulation scheme.