基于OFDM的电力线通信技术研究
发布时间：2018-09-14 07:17
【摘要】：电力线通信技术(Power Line Communication,PLC)是一种将数据加载到电力配线网络上,并通过其进行传输的通信技术。电力线网络已经遍及千家万户,利用其进行通信,不用另外铺设线路,资金投入少,且方便灵活。随着大数据信息时代的来临,人们对智能家居物联网系统产生了浓厚的兴趣,在已有的电力线网络基础上,可以实现各种家用电器的联网通信。另外,对于日益紧张的带宽而言,电力线通信可以和无线通信和光通信等通信技术结合起来,实现更加灵活高效的通信。本文首先对电力线信道中存在的各种有色噪声、脉冲噪声、窄带噪声和线路开关引起的多径衰落等信道特性进行分析和研究。其次根据电力线信道特性以及正交频分复用技术(Orthogonal Frequency Division Multiplexing,OFDM)的特点,本文将OFDM技术应用到电力线通信系统中。在了解OFDM的工作原理的基础上建立基于OFDM的电力线通信系统模型,并运用信道估计算法提升系统性能。最后,将PLC通信系统与其他室内无线通信系统进行比较,对未来电力线通信系统和其他通信技术融合的应用场景进行了分析和展望。
[Abstract]:Power line communication technology (Power Line Communication,PLC) is a kind of communication technology which loads data into power distribution network and transmits it. Power line network has spread over thousands of households, using it to communicate without laying additional lines, less capital investment, and convenient and flexible. With the advent of big data's information age, people have a strong interest in the intelligent home Internet of things system. Based on the existing power line network, various kinds of household appliances can be networked communication. In addition, for the increasingly tight bandwidth, power line communication can be combined with wireless communication and optical communication technology to achieve more flexible and efficient communication. In this paper, the channel characteristics of various colored noise, pulse noise, narrowband noise and multipath fading caused by line switch are analyzed and studied. Secondly, according to the characteristics of power line channel and orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing,OFDM), this paper applies OFDM technology to power line communication system. On the basis of understanding the working principle of OFDM, the power line communication system model based on OFDM is established, and the channel estimation algorithm is used to improve the system performance. Finally, by comparing the PLC communication system with other indoor wireless communication systems, the application scenarios of future power line communication system and other communication technologies are analyzed and prospected.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN913.6
本文编号：2241965
[Abstract]:Power line communication technology (Power Line Communication,PLC) is a kind of communication technology which loads data into power distribution network and transmits it. Power line network has spread over thousands of households, using it to communicate without laying additional lines, less capital investment, and convenient and flexible. With the advent of big data's information age, people have a strong interest in the intelligent home Internet of things system. Based on the existing power line network, various kinds of household appliances can be networked communication. In addition, for the increasingly tight bandwidth, power line communication can be combined with wireless communication and optical communication technology to achieve more flexible and efficient communication. In this paper, the channel characteristics of various colored noise, pulse noise, narrowband noise and multipath fading caused by line switch are analyzed and studied. Secondly, according to the characteristics of power line channel and orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing,OFDM), this paper applies OFDM technology to power line communication system. On the basis of understanding the working principle of OFDM, the power line communication system model based on OFDM is established, and the channel estimation algorithm is used to improve the system performance. Finally, by comparing the PLC communication system with other indoor wireless communication systems, the application scenarios of future power line communication system and other communication technologies are analyzed and prospected.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN913.6
【参考文献】
相关硕士学位论文 前2条
1 谢俐;电力线载波数字通信技术研究与实践[D];重庆大学;2009年
2 申慧鹏;MIMO-OFDM系统中时变衰落信道估计算法研究[D];太原理工大学;2010年
，本文编号：2241965
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