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针对目前提出的大部分双向中继信道中干扰对齐算法得到的结果通常不是系统全局最优解的问题,通过用户协作和中继协作设计预编码矩阵实现干扰对齐算法,优化整个系统的总速率性能.此外,分别通过用户和中继协作功率控制将干扰当作噪声处理,实现双向中继信道中的干扰管理.仿真结果表明:用户协作和中继协作干扰管理算法的系统整体性能都较好,当中继节点发送功率较大时,用户协作模式系统的总速率性能优于中继协作模式的.
Aiming at the problem that most of the proposed interference alignment algorithms in bi-directional relay channels are not always the optimal solution to the global system, the interference alignment algorithm is designed by user cooperation and relay cooperation to design a precoding matrix to optimize the overall rate performance of the entire system In addition, the interference management in bidirectional relay channel is treated as interference by user and relay cooperative power control respectively.The simulation results show that the overall system performance of user cooperation and relay cooperative interference management algorithm is good, When the relay node has a large transmission power, the total rate performance of the user cooperative mode system is better than that of the relay cooperation mode.