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文中主要分析了信道估计存在误差时多天线选择(AS)系统的性能,推导出了系统误符号率(SER)性能表达式。仿真结果表明,随着信噪比增大,理论分析结果无限趋近系统实际性能。数值分析结果同样表明,天线选择系统的主要优势在信道估计误差下依然存在,即在实际使用天线不变的情况下增加可用天线数目依然可以提高系统的分集度。
In this paper, the performance of multi-antenna selection (AS) system in the presence of channel estimation errors is analyzed, and the performance expression of system symbol error rate (SER) is deduced. The simulation results show that as the signal-to-noise ratio increases, the theoretical analysis results approach the system performance indefinitely. The numerical analysis also shows that the main advantage of the antenna selection system still exists under the channel estimation error, that is, increasing the number of available antennas when the antenna is actually used can still improve the diversity of the system.