基于PLC信道相关性的分集合并技术研究

发布时间：2018-04-09 04:03

本文选题：电力线载波通信　切入点：电力线信道　出处：《重庆邮电大学学报(自然科学版)》2017年01期

【摘要】：研究电力线信道(power line channel,PLC)相关性对提高电力线通信系统的性能具有重要意义。基于电力线信道的多输入多输出(multiple input muliple output,MIMO)模型和信道本身的物理特性,可知电力线载波通信系统中信道间存在一定的相关性。详细分析了电力线信道单输入多输出(single input multiple output,SIMO)系统中子信道之间相关性及计算方式,同时也分析了电力线单输入多输出系统在分集合并技术下,采用二进制相移键控(binary phase shift keying,BPSK)调制方式时的最大比合并和等增益合并的系统误码率,比较了2种分集合并技术在不同的信道相关性下的误码率。通过仿真得出,相关性会影响分集合并的误码率,进而影响系统的性能。
[Abstract]:It is very important to study the power line channel correlation in power line communication system.Based on the multiple input muliple outputMIMOM model of power line channel and the physical characteristics of the channel itself, it is known that there is a certain correlation between the channels in the power line carrier communication system.In this paper, the correlation and calculation method among the single input multiple outputSIMO (single input multiple output) system in power line channel are analyzed in detail. At the same time, the power line single input multiple output system is analyzed under diversity merging technology.Using binary phase shift keying (BPSK) modulation mode, the BER of the system with maximum ratio combination and equal gain combination is compared, and the BER of two diversity combining techniques under different channel correlation is compared.The simulation results show that the correlation will affect the bit error rate of diversity merging, and then affect the performance of the system.
【作者单位】：重庆邮电大学;国网重庆市电力公司电力科学研究院;国网重庆市电力公司博士后科研工作站;
【基金】：中国博士后科学基金(2015T80961) 重庆市自然科学基金(cstc2016jcyj A0214) 重庆市教委科学技术研究项目(KJ120531)~~
【分类号】：TN913.6

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