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文中研究了混合发射天线选择的等增益传输(TAS-EGT)系统优化设计问题。根据信道衰落系数的排序统计特性,给出了TAS-EGT系统的平均接收信噪比,提出了最小发射天线数的计算方法。由于TAS-EGT系统的性能并非完全正比于射频链路数,因此文中提出了最优射频链路数的计算方法。仿真结果显示增加少量的发射天线可以节省大量的射频链路。因此,文中提出的算法可以降低系统的成本和复杂度,优化系统的性能以减少不必要的开销。
In this paper, the optimal design of equal-gain transmission (TAS-EGT) system for hybrid transmit antennas is studied. According to the order statistics of channel fading coefficient, the average received signal-to-noise ratio of TAS-EGT system is given, and the calculation method of minimum transmitting antenna number is proposed. Because the performance of TAS-EGT system is not completely proportional to the number of radio frequency links, this paper proposes the calculation method of the optimal number of radio frequency links. Simulation results show that adding a small number of transmit antennas can save a lot of RF links. Therefore, the proposed algorithm can reduce the cost and complexity of the system and optimize the performance of the system to reduce unnecessary overhead.