【作者】 田秀丽；

【导师】 王文理；

【作者基本信息】 河北大学 ， 通信与信息系统， 2004， 硕士

【摘要】 电力线网络范围较广，利用现有的电力线进行通信可以节约大量的通信线路的投资，但是电力线上的干扰及噪声比较大。扩频通信系统与常规的通信系统相比，具有很强的抗人为干扰、抗窄带干扰和抗多径干扰的能力，并具有信息隐蔽、多址保密通信等特点。在电力线通信中采用扩频通信方式，可以提通信质量。 本文主要负责电力线扩频通信系统的接收部分。调制方式采用2DPSK，扩频所需的伪随机编码采用m序列，接收端同步系统采用匹配滤波器。选用Altera公司的MAX+PLUSⅡ作为开发平台。 各章内容安排如下： 第一章介绍了电力线通信概况、扩频通信概况以及EDA技术。 第二章介绍了扩频通信的基本原理、理论依据、系统模型、伪随机编码和可编程逻辑器件CPLD。 第三章阐述了接收系统各部分的设计与实现。 第四章进行了经验总结。 第五章对整个设计做了总结并提出了建议。更多还原

【Abstract】 Power line is most widely network, using the existing power line to communicate can save most invest of line, but there is much disturb and noise on power line. The spread spectrum(SS) communication system has stronger ability of resisting jamming, narrow band, and multipath interference than that of the conservation system. And it also has the characteristic of low probability of intercept and multiple access secure communication. So using spread spectrum communication on power line can improve the quality of communication .This paper mainly deal with the sink of the spread spectrum communication on power line. The modulator is 2DPSK, the PN code use m sequence , and the synchronous system use matched-filter. The development platform select the MAX+PLUSII belonging to the Altera Company.Chapter one introduce the general situation of the communication on power line, the general situation of spread spectrum communication and the development of EDA.Chapter two introduce the theory of the spread spectrum communication , the model of the system, the PN code and CPLD.Chapter three discuss the design and realization of every part.Chapter four talk about, the experience in design.Chapter five sum up the whole design and give some advice.更多还原