Research Of Spread Spectrum Weak Communication

Spread spectrum communication technology is a new communication system, which is an important development direction in communication and control domain.This paper introduces the mathematic model, basic theoretics and system structure of Spread spectrum communication, analyzes and gives its key techniques and implementation thought. Spreading spectrum and dispreading spectrum are fundamentals of the Spread Spectrum (SS) communication system, in which construction and selection of Pseudo Noise (PN) code act as main function. We put forward a new optimized arithmetic and construct the primitive polynomial library by researching the primitive polynomial which generate PN code. We finish swashing SAW Tapped Delay Line effectively by adopting CPLD and avalanche transistor circuit to produce pulse. We also setup a emulate model of SAWTDL which can simulate working process of all kinds of SAWTDL by being inputted different electric parameters. Through analyzing and experimenting on...