Joint Resource Allocation in SWIPT OFDM Relay Systems

He Li-jun; Zhang Guang-chi; Huang Gao-fei; Wan Lin-qing; Cui Miao; Liu Yi-jun; Lin Fan

doi:10.12052/gdutxb.170108

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Joint Resource Allocation in SWIPT OFDM Relay Systems

更新时间：2026-05-27

- Joint Resource Allocation in SWIPT OFDM Relay Systems
- Vol. 35, Issue 1, Pages: 29-34(2018)
- 作者机构：
  
  1. 广东工业大学　信息工程学院,广东,广州,510006
  2. 广州大学　机械与电子工程学院,广东,广州,510006
  3. 广州杰赛科技股份有限公司,广东,广州,510310
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.170108
  CLC： TN929.5
- Online First：09 January 2018，
  
  Published：2018
- 稿件说明：
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何丽君, 张广驰, 黄高飞, 万林青, 崔苗, 刘怡俊, 林凡. 无线携能OFDM中继系统的联合资源分配研究[J]. 广东工业大学学报, 2018, 35(1): 29-34.

He Li-jun, Zhang Guang-chi, Huang Gao-fei, et al. Joint Resource Allocation in SWIPT OFDM Relay Systems[J]. 2018, 35(1): 29-34.
何丽君, 张广驰, 黄高飞, 万林青, 崔苗, 刘怡俊, 林凡. 无线携能OFDM中继系统的联合资源分配研究[J]. 广东工业大学学报, 2018, 35(1): 29-34. DOI： 10.12052/gdutxb.170108.

He Li-jun, Zhang Guang-chi, Huang Gao-fei, et al. Joint Resource Allocation in SWIPT OFDM Relay Systems[J]. 2018, 35(1): 29-34. DOI： 10.12052/gdutxb.170108.

摘要

在能量受限的中继系统中

无线携能通信技术是一种有效地延长其使用寿命的方法. 本文研究具有大规模天线阵列结构的正交频分复用(OFDM)解码转发中继系统的无线携能通信

其发送端配备了大规模天线阵列. 传输过程分为3个时隙

在第一个时隙

发送端运用基于最大比传输的波束成形向中继传输能量; 在第二个时隙

发送端向中继发送信息；在第三个时隙

中继使用之前收获的能量向接收端转发信息. 讨论了信息和能量传输的功率在各子载波间的分配以及3个时隙的时长分配问题

提出了一种最大化传输信息速率的时间和功率联合分配最优算法. 仿真结果表明

该算法明显优于已有功率和时间分配算法.

Abstract

Simultaneous wireless information and power transfer (SWIPT) is an effective way to prolong the operation time of energy-constrained wireless relay systems. A large-scale antenna array based SWIPT orthogonal frequency division multiplexing (OFDM) decode and forward (DF) relay system

in which the source is equipped with large-scale antenna array

is considered. The transmission process is divided into three time-slots. In the first time-slot

the source transmits power to the relay using maximum ratio transmission beamforming; in the second time-slot

the source transmits information to the relay; in the third time-slots

the relay transmits the information to the destination using the harvested energy in the first time-slot. Both the power allocation (PA) over the sub-carriers for information and power transmissions from the source to the relay and from the relay to the destination

and the time allocation (TA) between the first

second and third time-slots are investigated. An optimal joint PA and TA algorithm has been proposed. Computer simulation results shows that the proposed algorithm outperforms some benchmark schemes.

关键词

Keywords

references

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