多中继选择极化译码转发及优化功率分配

doi:10.12263/DZXB.20210336

电子学报 ›› 2022, Vol. 50 ›› Issue (5): 1167-1173.DOI: 10.12263/DZXB.20210336

多中继选择极化译码转发及优化功率分配

亓凯梁, 刘超, 包建荣, 姜斌, 吴俊

杭州电子科技大学通信工程学院, 浙江杭州 310018

收稿日期:2021-03-10 修回日期:2021-10-09 出版日期:2022-05-25
- 通讯作者:
- 包建荣
- 作者简介:
- 亓凯梁男, 1996年生于山东省济南市.现为杭州电子科技大学通信工程学院硕士研究生.主要研究方向为无线通信、信道编码等.E‑mail: qikailiang@163.com
  刘超男, 1977年生于湖北武汉.现为杭州电子科技大学副教授,硕士生导师.主要研究方向为无线通信和计算机通信网等.E‑mail: liuchao@hdu.edu.cn
  包建荣男, 1978年生于浙江杭州.现为杭州电子科技大学教授, 博士生导师.主要研究方向为空间通信、协同信息论与编码、无线AI等.E‑mail: baojr@hdu.edu.cn
  姜斌男, 1980年生于浙江衢州.现为杭州电子科技大学高级实验师,硕士生导师.主要研究方向为空间无线通信和无线传感器网络等.E‑mail: jiangbin@hdu.edu.cn
  吴俊男, 1988年生于湖北黄冈.现为杭州电子科技大学讲师, 硕士生导师.主要研究方向为认知无线电, 无人机通信, 网络安全, 异常检测等.E‑mail: wuj@hdu.edu.cn
- 基金资助:
- 国家自然科学基金 (U1809201); 浙江省属高校基本科研业务费专项资金 (GK209907299001-003); 浙江省自然科学基金 (LY20F010010)

Multi-Relay Selective Polar Decoding and Forwarding and Optimized Power Allocation

QI Kai-liang, LIU Chao, BAO Jian-rong, JIANG Bin, WU Jun

School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China

Received:2021-03-10 Revised:2021-10-09 Online:2022-05-25 Published:2022-06-18
- Corresponding author:
- BAO Jian-rong
- Supported by:
- National Natural Science Foundation of China (U1809201); Fundamental Research Funds for Provincial Colleges and Universities of Henan Province (GK209907299001-003); National Natural Science Foundation of Zhejiang Province, China (LY20F010010)

摘要/Abstract

摘要：

为了解决多卫星协作空间通信网络的高误码、低信息传输成功率等问题,提出了多中继节点选择极化译码转发及其优化功率分配方案. 它主要采用了信道统计特性的多中继选择译码转发、最优中继节点选择及相应的优化功率分配方案. 最优中继节点选择及功率分配方案在协作阈值设置较低情况下,其中断性能和复杂度优于多中继选择译码转发方案. 仿真表明：当误码率为 $10 - 4$ 时,采用所提极化码-最优中继方案,相对于现有极化码协作方案及低密度奇偶校验（Low Density Parity Check，LDPC）码协作方案,分别提高了约0.6dB 和0.8dB性能增益. 故该方案可有效用于卫星协作的星地融合无线传输通信网络.

关键词: 协作编码, 选择译码转发, 多中继节点选择, 功率分配, 中断概率, 极化码

Abstract:

To solve problems of high code error and low information transmission success probability of space communication networks with multi-satellite cooperation, multi-relay selective polar decoding and forwarding and optimized power allocation are proposed. Multi-relay selection decoding and forwarding with channel statistics characteristics, optimal relay node selection and corresponding power allocation are proposed, respectively. The optimal relay node selection and power allocation scheme have better outage performance and complexity than those of the multi-relay selection decoding and forwarding scheme, when the cooperative threshold is set low. Simulation results show that at bit error rate of $10 - 4$ , the proposed polar code-optimal relay scheme obtains by about 0.6dB and 0.8dB performance gains, when compared with those of the existing polar coded cooperation scheme and LDPC(Low Density Parity Check) code cooperation scheme. Therefore, it can be effectively used in satellite-to-ground fusion wireless transmission communication networks with satellite cooperation.

Key words: cooperative coding, selective decoding and forwarding, multi-relay node selection, power allocation, outage probability, polar code

中图分类号:

TN911

亓凯梁, 刘超, 包建荣, 等. 多中继选择极化译码转发及优化功率分配[J]. 电子学报, 2022, 50(5): 1167-1173.

Kai-liang QI, Chao LIU, Jian-rong BAO, et al. Multi-Relay Selective Polar Decoding and Forwarding and Optimized Power Allocation[J]. Acta Electronica Sinica, 2022, 50(5): 1167-1173.

图/表 6

图1 系统模型图

图2 直传、AF、DF、SDF系统中断概率比较

图3 采用CSI的多中继SDF方案的中断概率

图4 不同阈值下最优中继节点选择及功率分配方案的中断概率

图5 两种方案的比较

图6 不同编码方案下系统性能的比较

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多中继选择极化译码转发及优化功率分配

Multi-Relay Selective Polar Decoding and Forwarding and Optimized Power Allocation

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