摘要
多输入多输出传输方式的引入可以让传统电力线通信系统获得额外的传输增益,但电力线通信信道存在的复杂噪声仍对通信系统可靠性造成严重影响。为有效减少电力线通信信道噪声对多输入多输出电力线通信(multipleinput multipleoutput-powerlinecommunicationMIMO-PLC)系统的影响,该文提出MIMO-PLC直接序列扩频方案,并对MIMO-PLC直接序列扩频编码方法开展研究。该文针对两种MIMO-PLC直接序列扩频编码模式,分别给出对应的直接扩频序列编码传输方案,并利用MIMO-PLC信道特性仿真平台,对该文提出的MIMO-PLC直接序列扩频系统性能进行仿真分析。实验结果表明,在采用该文提出的直接扩频方法后,MIMO-PLC系统的空间复用误码率和空时分集的误码率得到了较大的下降,经扩频处理后系统抗噪声性能明显提高,系统可靠性显著提升。
Multi input multi output(MIMO)technology can make the traditional power line communication(PLC)system obtain additional transmission gain,but the complex noise of PLC system still has a serious impact on the reliability of the MIMO-PLC system.To reduce the influence of the noise on MIMO-PLC system,this paper proposes a coding scheme of direct sequence spread spectrum system(DSSSS)for MIMO-PLC system.MIMO PLC DSSSS was designed for space multiplexing and space-time diversity transmission schemes.The performance of MIMO-PLC DSSSS was simulated and analyzed by MIMO-PLC channel characteristic simulation platform.The experimental results show that the bit error ratio of the space multiplexing and space-time diversity of MIMO-PLC system were reduced greatly,the noise resistance performance and the system reliability of the system were improved significantly.
作者
曹旺斌
康辉
谢志远
梁晓林
胡正伟
CAO Wangbin;KANG Hui;XIE Zhiyuan;LIANG Xiaolin;HU Zhengwei(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;Hebei Key Laboratory of Power Internet of Things Technology(North China Electric Power University),Baoding 071003,Hebei Province,China;School of Electronic and Information Engineering,Hebei University,Baoding 071002,Hebei Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第S01期121-129,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(62001166)
河北省自然科学基金项目(E2019502186,F2019201362)
中央高校基本科研业务费专项基金项目(2021MS073)
关键词
电力系统通信
多输入多输出
编码方法
抗噪性能
power system communication
multi input multi output(MIMO)
coding method
anti-noise performance
