基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法

董丹丹; 孙宁

doi:10.11959/j.issn.1000-0801.2023084

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基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法

研究与开发 | 更新时间：2024-06-05

- 基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法
- Interference coupling cooperative suppression method for wideband carrier communication based on improved variational mode decomposition
- 电信科学 2023年39卷第5期页码：129-135
- 作者机构：
- 作者简介：
  
  [ "董丹丹（1986- ），女，国网河南省电力公司安阳供电公司副高级工程师，主要研究方向为电能计量、采集模块通信、反窃电和线损管理等" ]
  [ "孙宁（1986- ），男，国网河南省电力公司安阳供电公司工程师，主要研究方向为电力营销、信息采集和配电抢修" ]
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2023084
  中图分类号： TM73
- 网络出版日期：2023-05，
  
  纸质出版日期：2023-05-20
- 稿件说明：
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董丹丹, 孙宁. 基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法[J]. 电信科学, 2023,39(5):129-135.

Dandan DONG, Ning SUN. Interference coupling cooperative suppression method for wideband carrier communication based on improved variational mode decomposition[J]. Telecommunications science, 2023, 39(5): 129-135.
董丹丹, 孙宁. 基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法[J]. 电信科学, 2023,39(5):129-135. DOI： 10.11959/j.issn.1000-0801.2023084.

Dandan DONG, Ning SUN. Interference coupling cooperative suppression method for wideband carrier communication based on improved variational mode decomposition[J]. Telecommunications science, 2023, 39(5): 129-135. DOI： 10.11959/j.issn.1000-0801.2023084.

摘要

电力线宽带载波通信干扰耦合加重了子载波间的频域拖尾，降低了抑制方法的敏感性，通信质量较差，对此，提出了基于改进变分模态分解的电力线宽带载波通信干扰耦合协同抑制方法。以电力线宽带载波通信的信道特性为基础，建立了存在多径传播和多普勒效应的通信信道模型，模拟发出通信信号，利用改进变分模态分解算法预处理原始信号，将抑制问题转化为变分问题，同时以非约束性变分问题的离散形式表示信号，对变分问题不断更新，完成对信号的分离处理，实现对通信干扰的协同抑制。实验结果表明，所提方法在应用过程中，误比特率低、频率偏移小，抑制过程的敏感性得到了提高，具有实际应用价值。

Abstract

The interference coupling of power line broadband carrier communication aggravates the frequency domain tailing between subcarriers

reduces the sensitivity of suppression methods

and the communication quality is poor.Therefore

a cooperative suppression method of interference coupling of power line broadband carrier communication based on improved variational modal decomposition was proposed.Based on the channel characteristics of power line broadband carrier communication

a communication channel model with multipath propagation and Doppler effect was established

the communication signal was simulated

the original signal was preprocessed by using the improved variational modal decomposition algorithm

and the suppression problem was transformed into a variational problem.At the same time

the signal was expressed in the discrete form of unconstrained variational problem.The variational problem was continuously updated to complete the separation and processing of the signal

and realize the cooperative suppression of communication interference.The experimental results show that the proposed method has low bit error rate

small frequency offset

and practical application value.

关键词

Keywords

references

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