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Non-renewable energy efficiency optimization in energy harvesting relay-assisted system

机译：能量收集中继辅助系统中的不可再生能源效率优化

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摘要

In this paper, we consider a scenario where the source node powered by the conventional power grid transmits data with the assistance of some energy harvesting (EH) decode-and-forward (DF) relay nodes. Unlike EH providing renewable energy, most power grids are supported by the non-renewable fossil fuels. So our goal is to maximize the non-renewable energy efficiency (EE) of the non-EH source throughout multiple timeslots. To deal with the randomness of energy arrivals and non-ideal circuit power, we formulate the EE optimization problem of the relaying system by combining the power allocation and the sleep mode in both the source and the relay. We firstly deal with this problem in a special case with just one timeslot and then solve it in a multi-timeslot scenario with dynamic programming (DP) approach. We also propose a heuristic algorithm with a complexity lower than the DP algorithm. We compare the performance of the two algorithms with a baseline scheme. Simulation results show that the heuristic algorithm provides close EE with the DP algorithm, and a significant EE gain over the baseline scheme.
机译：在本文中，我们考虑了一种情况，其中由常规电网供电的源节点借助一些能量收集（EH）解码转发（DF）中继节点来传输数据。与EH提供可再生能源不同，大多数电网都由不可再生的化石燃料提供支持。因此，我们的目标是在多个时隙中最大化非EH源的不可再生能源效率（EE）。为了处理能量到达和非理想电路功率的随机性，我们通过结合源和继电器中的功率分配和睡眠模式来制定中继系统的EE优化问题。我们首先在只有一个时隙的特殊情况下处理此问题，然后在多时隙的情况下使用动态编程（DP）方法解决该问题。我们还提出了一种启发式算法，其复杂度低于DP算法。我们将两种算法的性能与基准方案进行比较。仿真结果表明，启发式算法与DP算法提供了接近的EE，并且在基线方案上具有显着的EE增益。

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  • 来源
    《Physical Communication》 |2018年第8期|183-190|共8页
  • 作者

    Ming Zhao; Dan Deng; Wuyang Zhou; Lisheng Fan;

  • 作者单位

    The Key Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China;

    Guangzhou Panyu Polytechnic;

    The Key Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China;

    School of Computer Science and Educational Software, GuangZhou University;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy harvesting; Relay; Energy efficiency; Non-renewable energy;

    机译：能量收集;继电器;能效;不可再生能源;

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