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文章分析了部分中继选择系统在同道干扰与信道反馈时延影响下的性能。基于部分中继选择方案的放大转发协议,推导了同道干扰与反馈时延作用下系统中断概率的闭式表达式。分析时利用第k个性能较差中继选择方法,得到的结果更具一般意义。Monte Carlo仿真验证了理论分析结果,揭示了反馈时延、干扰强度等因素对中继选择系统性能的影响。
The article analyzes the performance of some relay selection systems under the influence of co-channel interference and channel feedback delay. Based on the amplification and forwarding protocol of partial relay selection scheme, the closed-form expression of system interruption probability under the same channel interference and feedback delay is derived. When using the kth poor performance relay selection method, the result obtained is of more general significance. Monte Carlo simulation results verify the theoretical analysis and reveal the impact of feedback delay, interference intensity and other factors on the performance of relay selection system.