| The research situation of PLC was discussed firstly. Then the channel characteristic of PLC and its main implementation technique that is called Spread Spectrum Communication were also described in detail. Considering the requirement of communication network, a local area computer communication system of PLC based on USB interface was given after analyzing the application model of PLC. Then after theoretical analysis and digital simulation, the PLC Modem and the computer interface models were designed. The design of software about the two models was also finished. And the test analysis of software was provided as well. The result indicates that this kind of system could realize the communication between two terminals successfully. The interface is friendly. And the operation is convenient. This system is of good spread value in application. |
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