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Analysis of time-switching and power-splitting protocols in wireless-powered cooperative communication system

机译：无线协作通信系统中的时间切换和功率分配协议分析

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SWIPT techniques combined with wireless cooperative communication provides a sustainable solution to extend the lifetime of the communication networks. It prolongs the battery life of wireless low-powered devices and enables additional efficiency in terms of power in wireless communications. This paper explores performance difference of two simultaneous wireless information and power transfer (SWIPT) protocols named Time-Switching (TS) and Power-Splitting (PS). Two identical decode-and-forward relaying communication networks with multiple relays are considered, where energy constrained relay nodes harvest energy from the received Radio Frequency (RF) and use harvested energy to assist information transmission between the source and the destination. All relay nodes in one network use TS protocol while the relay nodes in the other network use PS protocol. In particular, we evaluate throughput and outage probability of maximal ratio combiner (MRC) output at the destination node of both systems. In order to evaluate throughput, outage probability is derived for delay-limited transmission mode. The numerical results provide practical insight into the performance difference in various system parameters for both TS and PS protocols. Simulation results obtained depict that the TS protocol is superior to PS protocol in performance parameters, BER, Outage probability and throughput in low transmission rate. However, in higher transmission rates PS becomes superior to TS protocol, though overall performance reduce compare to lower transmission rate. (C) 2018 Elsevier B.V. All rights reserved.
机译：SWIPT技术与无线协作通信相结合，提供了一种可持续的解决方案来延长通信网络的寿命。它延长了无线低功耗设备的电池寿命，并提高了无线通信中的电源效率。本文探讨了两种同时进行的无线信息和功率传输（SWIPT）协议（分别称为时间切换（TS）和功率分配（PS））的性能差异。考虑了具有多个中继的两个相同的解码转发中继通信网络，其中受能量限制的中继节点从接收的射频（RF）收集能量，并使用收集的能量来辅助源与目的地之间的信息传输。一个网络中的所有中继节点都使用TS协议，而另一网络中的中继节点则使用PS协议。特别是，我们评估了两个系统的目标节点处的最大比率合并器（MRC）输出的吞吐量和中断概率。为了评估吞吐量，导出了延迟受限传输模式的中断概率。数值结果为TS和PS协议的各种系统参数的性能差异提供了实用的见解。仿真结果表明，在低传输速率下，TS协议在性能参数，误码率，中断概率和吞吐量方面均优于PS协议。然而，在较高的传输速率下，PS的性能优于TS协议，尽管与较低的传输速率相比，总体性能有所下降。 （C）2018 Elsevier B.V.保留所有权利。

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