【作者】 吕文化；

【导师】 许宗泽；

【作者基本信息】 南京航空航天大学 ， 通信与信息系统， 2004， 硕士

【摘要】 室内电力线数据通信是实现家庭自动化和家庭联网的一种方便又经济的通信方法。本文在对电力线信道特征详细分析的基础上，设计了室内电力线直接序列扩展频谱通信系统。 本文设计了一个测量系统对实际电力线信道的主要特性进行了测量，详细分析了电力线的信号传输特性和噪声特性，给出了一个实用的室内电力线信道模型，包括参数化的传输函数模型以及背景噪声、窄带噪声和脉冲噪声的近似模型，并给出了计算机仿真实现方法。 讨论了电力线通信存在的一些问题及解决方法。研究对照了当前世界上使用的电力线通信技术，讨论了直接序列扩频通信技术应用于室内电力线通信的优势。 使用直接序列扩频及QPSK等通信技术构建了室内电力线通信系统，给出了主要的技术指标。应用Systemview仿真工具对系统进行了性能仿真，分析了系统的误比特率。并将其与非扩频系统进行了对比。更多还原

【Abstract】 In-building power line data communication is a convenient and economical method to implement home automation and home network. This paper designs an in-building power line DSSS communication system after analyzing the properties of power line channel in detail.This paper designs a measurement system and measures the main properties of power line practically. The characteristics of power line are analyzed in detail, and a power line channel model is presented which consists of the parametric transfer function model and the simulating model of background noise, narrow noise and impulse noise. Simultaneously the simulating method on the computer is presented.Problems in power line communication and the methods to resolve them are discussed. This paper compares the technology used currently in power line communication and discusses the advantage of DSSS technology to use in power line communication.An in-building power line data communication system is built using DSSS and QPSK technology and its important parameters are presented. Then the system is simulated in Systemview to analyze its performance and BER. At the end of this paper the DSSS system is compared with two different systems to emphasize its perfect performance.更多还原