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为了研究瑞利衰落信道下非正交选择放大转发协议和非正交选择译码转发协议的遍历容量,推导出这两种转发协议下遍历容量界的闭式表达式,蒙特卡罗仿真得到了两种协议在不同备选中继个数时的遍历容量.仿真结果表明两种协议的遍历容量随备选中继个数的增加而改善,当中继个数增加到一定值时,这种改善趋缓;相对而言,低信噪比时非正交选择放大转发协议的遍历容量较大,高信噪比时非正交选择译码转发协议的遍历容量较大.
In order to study the ergodic capacity of non-orthogonal selection amplification and forwarding protocols and non-orthogonal selection decoding and forwarding protocols under Rayleigh fading channels, a closed-form expression for traversing the capacity boundary under these two forwarding protocols is deduced. The Monte Carlo simulation results show that The traversal capacity of the two protocols when they are different relay numbers.The simulation results show that the traversal capacity of the two protocols improves with the increase of the number of alternative trunks, and when the number of trunks increases to a certain value, the improvement In contrast, the non-orthogonal selection amplification and forwarding protocol has a large traversal capacity at low signal-to-noise ratio and a large traversal capacity at non-orthogonal selection coding and forwarding protocols with high signal-to-noise ratio.