能量收集协作通信网络的安全可靠性研究

Security and Reliability of Energy Collection Cooperative Communication Network

为了探究能量收集与信息协作传输的性能影响规律,建立了单中继通信模型。在该模型中,独立能量源为信息源和中继提供能量,同时窃听用户窃听中继信息。推导了该模型的精确中断性能和截获概率,并在高信噪比下给出了中断概率的近似结果,得到了其最大分集阶数小于1。此外,通过理论仿真验证了理论推导的正确性,并发现中断性能最优的能量收集时间分配因子与信道参数、SNR及能量转化效率无关,仅受传输速率影响较大。最后,给出了安全性和可靠性的折中曲线。该研究成果可以对建立能量与信息之间的最佳协作传输提供参考。

In order to explore the performance impact law of energy collection and information cooperative transmission,a single relay communication model is established.In this model,independent energy sources provide energy for information sources and relays,while eavesdropping users eavesdropping relay information.The precise interruption performance and intercept probability of the model are derived,and the approximate results of the interruption probability are given at high signal-to-noise ratio,and the maximum diversity order is less than 1.In addition,theoretical simulations also indicate the correctness of the theoretical derivation,and it is found that the optimal energy collection time allocation factor is independent of channel parameters,SNR and energy conversion efficiency,and is only greatly affected by the transmission rate.Finally,a compromise curve between safety and reliability is given.The research results can provide a reference for establishing the best cooperative transmission between energy and information.