| 引用本文: | 马晓奇,邵滨,崔宇,等.电力线OFDM的压缩感知均衡消噪方法[J].电力系统保护与控制,2014,42(15):113-116.[点击复制] |
| MA Xiao-qi,SHAO Bin,CUI Yu,et al.Equalizing method of eliminating impulse noise for OFDM PLC system[J].Power System Protection and Control,2014,42(15):113-116[点击复制] |
|
| 摘要: |
| 电力线载波通信（PLC, Power Line Communication）技术被广泛地应用在电力数据采集系统中，大部分采用正交频分复用（OFDM, Orthogonal Frequency Division Multiplexing）技术，而电力线中的异步脉冲噪声和周期脉冲噪声对OFDM电力线系统的性能影响很大，特别是对系统的可靠性影响最大，造成系统的误比特率上升。针对此问题，利用OFDM信号的时域稀疏性，在接收端对发送信号进行消除脉冲噪声处理，减小接收端计算量，提高系统的可靠性。通过仿真结果可以表明，所提的均衡方案有效消除了脉冲噪声的影响，同时降低了误码率。 |
| 关键词: 电力线载波 脉冲噪声 均衡 误比特率 正交频分复用 |
| DOI：10.7667/j.issn.1674-3415.2014.15.018 |
| 投稿时间：2013-10-10修订日期：2014-02-22 |
| 基金项目: |
|
| Equalizing method of eliminating impulse noise for OFDM PLC system |
| MA Xiao-qi,SHAO Bin,CUI Yu,SUN Chang-he |
| (Electric Power Company of Liaoning Province, Shenyang 110000, China) |
| Abstract: |
| Power Line carrier Communication (PLC) technology is widely used in electric power data acquisition system, most of them adopt Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology, and the asynchronous pulse noise and periodic impulse noise in the power line have a great influence on the performance of OFDM power system, especially the greatest influence on the reliability of the system, due to the bit error rate of the system. Aiming at this problem, this paper uses OFDM signal sparse time-domain, eliminates impulse noise on the sending signal in the receiving terminal, and reduces the the calculation amount of the receiver, which improves the reliability of the system. The simulation results show that the proposed equalizing scheme eliminates the influence of impulse noise effectively and reduces the bit error rate. |
| Key words: PLC impulse noise equalizing BER OFDM |
