Optimal transmission strategy of diamond channel with limited battery capacity of source node

Taoshen LI; Li SUN; Zhe WANG

doi:10.11959/j.issn.1000-436x.2021069

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Optimal transmission strategy of diamond channel with limited battery capacity of source node

Papers | 更新时间：2024-06-05

- Optimal transmission strategy of diamond channel with limited battery capacity of source node
- Journal on Communications Vol. 42, Issue 6, Pages: 158-170(2021)
- 作者机构：
  
  1. 广西大学计算机与电子信息学院，广西南宁 530004
  2. 南宁学院信息工程学院，广西南宁 530299
  3. 广西民族大学人工智能学院，广西南宁 530005
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61762010)
- DOI：10.11959/j.issn.1000-436x.2021069
  CLC： TP393
- Online First：2021-06，
  
  Published：25 June 2021
- 稿件说明：
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Taoshen LI, Li SUN, Zhe WANG. Optimal transmission strategy of diamond channel with limited battery capacity of source node[J]. Journal on Communications, 2021, 42(6): 158-170.
DOI：

Taoshen LI, Li SUN, Zhe WANG. Optimal transmission strategy of diamond channel with limited battery capacity of source node[J]. Journal on Communications, 2021, 42(6): 158-170. DOI： 10.11959/j.issn.1000-436x.2021069.

摘要

为了解决无线能量收集网络中节点能量的不确定性使系统难以设计合理的传输策略的问题，构建源节点电池容量受限的菱形信道，以最大化系统端到端的吞吐量为目标，在满足传输节点间能量和数据因果及电池能量无溢出约束的条件下，构建系统中端到端吞吐量最大化的模型，提出一种最优的离线传输功率和速率分配策略。该策略首先根据理论分析和公式推导，将最优传输问题转化为求解广播信道侧的最优传输问题，利用注水算法求解源节点到中继节点的最优总功率。然后根据广播信道吞吐量最大化问题中的截止功率水平，分析源节点到各中继节点的吞吐量，根据中继节点数据到达情况，采用迭代注水法求解中继节点到目的节点最优传输功率，并通过扩展多址接入信道最优速率满足条件求解最优速率。仿真结果证明了所提优化策略的可行性和正确性。

Abstract

In order to solve the problem that the energy harvesting uncertainty of node in wireless energy harvesting network makes it difficult for the system to design a reasonable transmission strategy

a diamond channel with limited battery capacity of the source node were constructed.The goal was to maximize the end-to-end throughput of the system.Under the conditions of meeting the constraints of energy and data causality between transmission nodes and no battery energy overflow

a model to maximize the end-to-end throughput of the system was built

and an optimal offline transmission power and rate allocation strategy was proposed.Firstly

based on theoretical analysis and formula derivation

the strategy transformed the optimal transmission problem into the optimal transmission problem on the side of the broadcast channel

and used the water-filling algorithm to solve the optimal total power from the source node to the relay node.Then

the throughput of the source node to each relay node was analyzed based on the cutoff power level in the broadcast channel throughput maximization problem.Finally

according to the data arrival of the relay node

the iterative water-filling method was used to solve the optimal transmission power from the relay node to the destination node

and the optimal rate was solved by extending the optimal rate of the multiple access channel.Simulation results demonstrate the feasibility and correctness of the proposed optimization policies.

关键词

Keywords

references

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