论文部分内容阅读
在非完美和完美信道状态信息(CSI)两种情况下,对多小区大规模MIMO上行系统进行分析,推导了等增益合并(EGC)方案的可达速率表达式,并与最大比合并(MRC)方案进行比较.仿真结果表明,所推导的EGC闭合表达式与蒙特卡洛仿真结果相吻合;在非完美CSI且功率收缩因子为0.5的情况和完美CSI且功率收缩因子为1的情况下,随着天线数不断增加,EGC方案的频谱效率不断增加,并逐渐趋近于一个定值,说明了大规模MIMO中的EGC方案如MRC方案一样也具有有效节约能量的特点.
In the case of imperfect and perfect channel state information (CSI), the multi-cell large-scale MIMO uplink system is analyzed and the reachable gain rate expression of the equal gain combining (EGC) scheme is derived and compared with the maximum ratio combining ) Simulation results show that the EGC closed-loop expressions are in good agreement with the Monte-Carlo simulation results. In the case of non-perfect CSI with a power-shrinkage factor of 0.5 and a perfect CSI with a power-shrinkage factor of 1, As the number of antennas increases, the spectrum efficiency of the EGC scheme gradually increases and gradually approaches a fixed value, indicating that the EGC scheme in large-scale MIMO also has the same energy saving feature as the MRC scheme.