A Hardware Scheme Design And Equipment Integration Of Spread Spectrum Communication System

The background of this thesis is a kind of promising multi-carrier direct-sequencespread spectrum communication system.The paper aims to explore the Hardware solutionsdesign and Devices integration of this system.This thesis firstly gives the technical specification of system and some necessarydecomposition. Secondly, itcarriesout arequirement analysis of the function andperformance on the baseband transmit-receive module,investigates the options based onthe existing FPGA development platform,reaches a solution with good flexibility ofsoftware and hardware compatibility, and finallycompletes the commissioning basebandhardware platforms.On this basis,analysis of function and performance requirement of the L-band IFtransmit-receive modem is also presented.Besides, the communication interface isconstructed between L-band IF modem and Baseband transmit-receive unit,base onVHDL.Furthermore,the thesis evaluated and analyzed the influence of the L-band IFmodem on the system’s performance,according to detailed test of the modem’s functionand performance index.Next, accessment and verification of overcall transmit-receiveperformance of the IF modem is carried out under a complete set of test environment.At last, this thesis discussed the whole machine integration scheme ofL-band/baseband transmit-receive units and the industrial control computer, as well as astructure design of the whole machine’s case.