Packet Drop Probability Analysis of Dual Energy Harvesting Links With Retransmission
Packet Drop Probability Analysis of Dual Energy Harvesting Links With Retransmission
复制标题
带重传的双能量收集链路的丢包概率分析
DOI：
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发表时间：
2016
影响因子：
16.4
通讯作者：
C. Murthy
中科院分区：
文献类型：
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作者：
M. Sharma;C. Murthy
在本文中，我们考虑点对点双能量收集（EH）链路，其中发射机和接收机都是EH节点（EHN），重传协议：无论是自动重传请求（ARQ）或混合ARQ与追逐组合。我们开发了一个框架来分析各种物理层参数的影响，在发射机和接收机处的能量收集简档、能量缓冲器的大小和功率管理策略，以及信道统计和相干时间对双EH链路在块衰落信道上的分组丢弃概率（PDP）的影响。我们推导出基于重传索引的功率管理策略的PDP的封闭形式的表达式。所提出的框架自然地扩展以获得单EH链路的PDP，即，两个节点中只有一个节点收集能量。为了获得进一步的见解，我们分析了PDP的链接与零和无限的能量缓冲区的大小，并表征能量无约束的制度，其中PDP是由平均收获率。通过广泛的蒙特卡罗模拟，我们证明了理论表达式的准确性，对现有的电源管理方案的性能进行比较，并说明所涉及的性能权衡。
In this paper, we consider point-to-point dual energy harvesting (EH) links, where both transmitter and receiver are EH nodes (EHNs), with a retransmission protocol: either an automatic repeat request (ARQ) or hybrid ARQ with chase combining. We develop a framework to analyze the impact of various physical layer parameters, e.g., the energy harvesting profiles, size of energy buffer, and power management policies, at both the transmitter and receiver, and the channel statistics and coherence time, on the packet drop probability (PDP) of dual EH links over block fading channels. We derive the closed-form expressions for the PDP of a retransmission index-based power management policy. The presented framework naturally extends to obtain the PDP of mono EH links, i.e., links where only one of the two nodes harvests energy. To obtain further insights, we analyze the PDP of links with zero and infinite energy buffer size, and characterize the energy unconstrained regime, where the PDP is governed only by the average harvesting rate. Through extensive Monte Carlo simulations, we demonstrate the accuracy of the theoretical expressions, compare performance against existing power management schemes, and illustrate the performance tradeoffs involved.