Joint Data and Energy Transmission in a Two-Hop Network With Multiple Relays

Joint Data and Energy Transmission in a Two-Hop Network With Multiple Relays
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具有多个中继的两跳网络中的联合数据和能量传输

DOI:
10.1109/lcomm.2014.2360203
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发表时间:
2014-09
期刊:
IEEE Communications Letters
影响因子:
--
通讯作者:
Xiaodong Wang
Xiaodong Wang
中科院分区:
其他
文献类型:
--
作者:
Lan Tang;Xinggan Zhang;Xiaodong Wang

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无线能量传输(WET)是一种很有前途的技术,可以延长能量受限的无线网络的使用寿命。在本文中,我们考虑一个由 WET 支持的具有多个中继节点的两跳通信系统。为了最小化传输时间,我们提出了一种最佳传输方案,其中中继节点采用“收获然后解码并转发”策略。在数据和能量到达的因果约束下,通过线性程序计算源和每个中继节点的最佳传输时间分配。分析和仿真结果揭示了最优时间分配与系统参数之间的关系。
Wireless energy transfer (WET) is a promising technique to prolong the lifetime of an energy-constrained wireless network. In this paper, we consider a two-hop communication system with multiple relay nodes powered by WET. To minimize the transmission time, we propose an optimal transmission scheme, in which the relay nodes adopt a “harvest-then-decode and forward” policy. The optimal transmission time allocation of the source and each relay node is calculated by a linear program under causality constraints on both data and energy arrivals. The analytical and simulation results reveal the relationship between the optimal time allocation and system parameters.
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