Design Receiver For DS/FH Hybrid Spread-Spectrum Communication System

The spread spectrum(SS) communication system has stronger ability of resisting jamming, narrow band, multipath interference than that of the conservation communication systems. And it also has the chararcteristics of low probability of intercept and multiple access secure communication. Nowadays, the SS teclinology has expanded from the military field to the commercial field. Software Radio(SWR) was proposed by Joe Motila on May 1992 with the purpose of solving the following problems in wireless communication: the co-existiong multiple systems, the competition between several communicaton standards, the lack of bandwidth and the rapid growth of personal communication. So SS and SWR are two technology of the fastest developing and the most promising.This paper mainly discusses and realizes the receiver of SS communication system base on software radio, it results in a great flexibility in the whole system. It combined Direct Spread Spectrum(DS) and Frequency Hopping Spread Spectrum(FH), so it can satisfy the require of anti-jamming of systems.it concentrate their advantage and overcome shortage in single spread sprectrum style.