Open AccessLow-voltage power line broadband carrier communication signal detection based on eigenvalue analysis
Author(s) -
Huizhu Xia,
Weiqiong Song,
Rui Li,
Xiaolin Wu,
Yizhao Luo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/4/042003
Subject(s) - power line communication , electronic engineering , multipath propagation , attenuation , smart grid , computer science , noise (video) , interference (communication) , signal (programming language) , electrical engineering , engineering , power (physics) , telecommunications , channel (broadcasting) , physics , optics , quantum mechanics , artificial intelligence , image (mathematics) , programming language
In this paper, the eigenvalue analysis of the channel characteristics of low-voltage power lines is carried out, and the characteristics of impedance, signal attenuation and noise interference are studied. Based on the characteristics of China’s power grid and the on-site measurement of power lines in residential communities and metalworking internships, the noise sources and corresponding noise characteristics of low-voltage power line networks are analyzed. Aiming at the characteristics of signal attenuation and interference on low-voltage power lines, which are complex, random, and time-varying, and difficult to describe with more accurate analytical or mathematical models, several anti-interference measures to improve communication quality are proposed: Data packet reorganization Adding a wave blocker, multipath receiving technology, spread spectrum communication technology, and adopting a standardized communication protocol, and applying it to engineering experiments, the practice proves that the measures used are feasible and effective.