论文标题
干扰对RIS辅助源DF继电器网络的性能的影响
Impact of Interference on the Performance of RIS-Assisted Source DF Relaying Networks
论文作者
论文摘要
这封信调查了共渠道干扰（CCI）对具有可重构智能表面（RIS）辅助源的解码（DF）中继网络的性能的影响。我们考虑一个来源，多个DF继电器以及一个在继电器和目的地的CCI的目的地。假设瑞利褪色通道，我们为系统中断概率得出了封闭形式的准确近似值。此外，我们研究了高信噪比（SNR）制度的系统性能，其中为渐近中断概率，多样性顺序和编码增益得出了封闭形式表达式。结果表明，源n的反射元素n数量对系统的编码增益有很小的影响，而不是对多样性顺序的影响。此外，调查结果表明，继电器k的数量正在影响多样性顺序，并且对性能的影响比N。最后，结果表明，在源节点处利用RIS可以减轻继电器节点处的干扰效果。
This letter investigates the impact of co-channel interference (CCI) on the performance of a decode-and-forward (DF) relaying network with a reconfigurable intelligent surface (RIS)-assisted source. We consider one source, multiple DF relays, and one destination with CCI at both the relays and destination. We derive closed-form accurate approximations for the system outage probability assuming Rayleigh fading channels. In addition, we study the system performance at the high signal-to-noise ratio (SNR) regime, where closed-form expressions are derived for the asymptotic outage probability, diversity order, and the coding gain. The results show that the number of reflecting elements N at the source has a small effect on the coding gain of the system and not on the diversity order. Furthermore, findings illustrate that the number of relays K is affecting the diversity order and is more impactful on the performance than N. Finally, results show that utilizing RIS at the source node mitigates the interference effect at the relay nodes.
