中国电力 ›› 2021, Vol. 54 ›› Issue (6): 199-207.DOI: 10.11930/j.issn.1004-9649.201909079

• 信息与通信 • 上一篇    下一篇

全双工和半双工自适应的电力线中继和功率优化分配算法

陈智雄, 曾鸿海, 韩东升   

  1. 华北电力大学 电子与通信工程系,河北 保定 071003
  • 收稿日期:2019-09-15 修回日期:2020-01-31 发布日期:2021-06-05
  • 作者简介:陈智雄(1983-),男,通信作者,博士,副教授,从事电力系统通信和协作通信研究,E-mail:chenzx1983@sohu.com;曾鸿海(1996-),男,硕士研究生,从事协作通信研究,E-mail:18331128986@163.com;韩东升(1981-),男,博士,副教授,从事数字通信系统和无线通信研究,E-mail:handongsheng@ncepu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(61601182,61771195);河北省自然科学基金资助项目(F2017502059,F2018502047);中央高校基本科研业务费专项资金资助项目(2019MS088)

Adaptive Full-Duplex and Half-Duplex Power Line Relay and Power Optimization Allocation Algorithm

CHEN Zhixiong, ZENG Honghai, HAN Dongsheng   

  1. Department of Electronics and Communication Engineering, North China Electric Power University, Baoding 071003, China
  • Received:2019-09-15 Revised:2020-01-31 Published:2021-06-05
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No. 61601182, No. 61771195), Natural Science Foundation of Hebei Province in China(No. F2017502059, No.F2018502047) and the Fundamental Research Funds for Central Universities(No.2019MS088)

摘要: 为了提高远距离通信能力,电力线通信目前主要采用两时隙的半双工中继技术。全双工技术可以提高系统频谱效率和解决电磁干扰问题,但其性能易受自干扰影响。提出了一种全双工和半双工自适应的电力线中继算法,并对其进行了系统性能分析。基于对数正态衰落和贝努利-高斯脉冲噪声的电力线信道模型,给出了不同双工时信号处理过程和自适应中继步骤;然后应用Gauss-Hermite变换和分区域积分等方法,推导了不同双工方式时的中断概率性能;接着用蒙特卡洛仿真验证了中断概率表达式的可靠性,并分析了双工方式、自干扰、中继距离、功率、信道参数对系统性能的影响;最后通过序列二次规划法得到最佳功率分配值。

关键词: 半双工, 全双工, 自适应中继, 脉冲噪声, 功率分配

Abstract: In order to improve the long-distance communication capability, power line communication currently mainly adopts a two-slot half-duplex relay technology. Full-duplex technology can improve the spectral efficiency and solve electromagnetic interference problems of the system, but its performance is prone to be affected by self-interference. The paper proposes a full-duplex and half-duplex adaptive power line relay algorithm and analyzes its system performance. Based on the power line channel model of lognormal fading and Bernoulli-Gaussian impulse noise, the signal processing process of different duplex and adaptive relay steps are given. Then, using Gauss-Hermite transform and sub-regional integration, the outage probability in different duplex modes is derived. After that, the reliability of the theoretical formula is verified by Monte Carlo simulation. The impact of duplex mode, self-interference, relay location, power and channel parameters on system performance are analyzed. Finally, the optimal power allocation value is obtained by the sequential quadratic programming.

Key words: half-duplex, full-duplex, adaptive relay, impulse noise, power allocation