A Precoding Scheme to Reduce the Effect of Channel Correlation for MIMO-PLC System

被引：2

作者：

Cao, Wangbin ^{[1
,2
,4
]}

Kang, Hui ^{[1
,2
]}

Liang, Xiaolin ^{[3
]}

Xie, Zhiyuan ^{[1
,2
]}

Zhao, Xiongwen ^{[1
,2
,4
]}

机构：

[1] North China Elect Power Univ, Sch Elect & Elect Engn, Baoding 071000, Peoples R China

[2] North China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China

[3] Hebei Univ, Sch Elect & Informat Engn, Baoding 071002, Peoples R China

[4] North China Elect Power Univ, Hebei Key Lab Power Internet Things Technol, Baoding 071003, Peoples R China

来源：

CHINA COMMUNICATIONS | 2023年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

carrier transmission on power lines; telecommunication cables; error correction; precoding; POWER-LINE COMMUNICATION; NOISE;

D O I：

10.23919/JCC.2023.02.013

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

MIMO technique can provide higher in-formation throughput and transmission reliability for the PLC system. However, the MIMO-PLC system based on three-conductor cable has a high correlation among its sub-channels. Spatial multiplexing technol-ogy will be affected by the spatial correlation between MIMO-PLC sub-channels. To reduce the system bit error rate caused by MIMO-PLC correlation among sub-channels, this paper proposed a phase rotation pre -coding scheme for the 2 x 2 closed-loop MIMO-PLC system. According to the channel transfer function of high correlation MIMO-PLC system, the phase rota-tion precoding matrix F is calculated, and the trans-mission signal matrix S is modulated with the F , the code distance at the receiving point with smallest code distance is increased by phase rotation. Simulation re-sults show that the scheme can effectively reduce the bit error rate of the 2 x 2 MIMO-PLC system based on ML detection, and significantly improve the system performance.

引用

页码：216 / 225

页数：10

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