在多用户MIMO(multiple—inputmultiple—output)放大转发中继通信网络中,针对双向中继的传输特点,采用最小和归一化均方误差(SNMSE)准则设计了一种新的中继最优波束形成滤波器,并将OFDM(orthogonalfrequencydivisionmultiplexing)技术与所提的SDMA(spacedivisionmultipleaccess)策略相结合,通过充分利用频率分集和空间分集来提高系统性能.仿真结果表明,所提出的双向中继策略在系统和速率和误比特率性能上显著优于其它中继策略.
In communication networks with multiuser MIMO (multiple-input multiple-output) amplify-and-forward relay, aiming at the transmission characteristics of two-way relay, a new optimal relay beamforming filter is proposed by applying minimum sum normalized mean square error (SNMSE) criterion. Combining the OFDM (orthogonal frequency division multiplexing) technique with the proposed SDMA (space division multiple access) scheme, the performance of the system can be improved by fully utilizing frequency diversity and space diversity. Simulation results show that the proposed two-way relay scheme outperforms other relay schemes in the performance of system sum rate and bit error ratio.