| 跻身未来的电力线通信:（五）宽带PLC的扩频技术融入 |
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| 引用本文： | 李勃,陈启美,沈薇.跻身未来的电力线通信:（五）宽带PLC的扩频技术融入[J].电力系统自动化,2003,27(9):77-81. |
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| 作者姓名： | 李勃 陈启美 沈薇 |
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| 作者单位： | 南京大学PLC研究组,江苏省南京市,210093 |
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| 摘 要： | 在直接序列扩频机理的基础上，就其抗干扰能力给出了理论分析，并指出其优点及不足之处。针对直接序列扩频中传输速率低的问题，提出了采用多进制正交扩频技术的方案，包括多进制正交扩频的发送、接收及其特点分析等内容，以提高电力线通信(PLC)的通信容量，并进而组成基于多进制正交扩频的PLC网络(PLC—NET)。该方案有效地解决了PLC—NET发展的宽带问题，对组建大型PLC—NET具有相当的现实指导意义。
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| 关 键 词： | 电力线通信 PLC 宽带 扩频技术 直接序列扩频 多进制正交扩频 电力系统 电网 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
PREDICTIVE SCHEMES FOR FUTURE POWER LINE COMMUNICATION Part Five Combination of Spread Spectrum Technology in the Broadband PLC |
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| Li Bo,Chen Qimei,Shen Wei.PREDICTIVE SCHEMES FOR FUTURE POWER LINE COMMUNICATION Part Five Combination of Spread Spectrum Technology in the Broadband PLC[J].Automation of Electric Power Systems,2003,27(9):77-81. |
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| Authors: | Li Bo Chen Qimei Shen Wei |
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| Abstract: | Based on the mechanism of direct sequence spread spectrum (DSSS), an analysis is made of the anti noise capability of the DSSS and its advantages and disadvantages are proposed. In order to solve the low transmission rate problem of DSSS, the multiple sequence spread spectrum technology is introduced, including a discussion on its transmission, receiving and characteristics. Thus the communication capacity of power line communication (PLC) is improved and a PLC NET based on multiple sequence quadrature spread spectrum can be constructed. This can effectively solve the bandwidth problem brought about by the development of PLC NET, and is of significance to the construction of large scale PLC NET. |
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| Keywords: | power line communication spread spectrum technology direct sequence spread spectrum multiple sequence spread spectrum |
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