The Digital Spread Spectrum Communication On Power-line System -- Receiving Part

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.