| 配电线载波通信调制技术的性能比较 |
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| 引用本文： | 汤正,汪晓岩,刘中. 配电线载波通信调制技术的性能比较[J]. 电力系统通信, 2005, 26(7): 1-5 |
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| 作者姓名： | 汤正 汪晓岩 刘中 |
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| 作者单位： | 1. 南京理工大学,电光学院,江苏,南京,210094
2. 南京国电自动化研究院,江苏,南京,210003 |
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| 摘 要： | 首先分析配电线信道的噪声特性，然后对正交频分复用(OFDM)和直接序列扩频(DSSS)调制技术对配电线信道上不同类型噪声的抑制能力进行了理论分析，并通过实际使用MATLAB建立基于不同调制技术的配电线载波通信系统，对模拟的中压配电线上的典型噪声(加性高斯白噪声和浪涌噪声)和频率深衰落特性进行抑制的仿真实验，得到了OFDM和DSSS两种调制性能的比较结果和不同条件下各自的优劣特性。
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| 关 键 词： | 配电线载波通信 正交频分复用 直接序列扩频 |
| 文章编号： | 1005-7641(2005)07-0001-05 |
| 修稿时间： | 2005-03-25 |
Comparison of modulating technologies for distribution line carrier communication |
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| TANG Zheng,WANG Xiao-yan,LIU Zhong. Comparison of modulating technologies for distribution line carrier communication[J]. Telecommunications for Electric Power System, 2005, 26(7): 1-5 |
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| Authors: | TANG Zheng WANG Xiao-yan LIU Zhong |
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| Abstract: | In accordance with the characteristic of the noise on distribution line, analyze the capability of restraining different types of noise in DLC based on the OFDM (Orthogonal Frequency Division Multiplexed) and DSSS (direct sequence spread spectrum) modulation techniques. On MATLAB platform design simulating experiments about typical noise distributing (Additive white Gaussian noise and surge noise) and suppressing frequency deep fading characteristic when the distribution line carrier communication system transmitted signal on a medium voltage power line channel under different modulation techniques, got the comparing result and the good and bad characteristics of OFDM and DSSS modulation technique. |
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| Keywords: | DLC OFDM DSSS |
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