Study Of Chaotic Sequence In DS-SS Communication System

Spread spectrum communication uses much larger bandwidth than original information required and it uses pseudo noise (PN) sequences modulate. A spread spectrum receiver then uses the synchronized replica of the pseudo noise sequences to recover the original information. The performance of PN sequence are very importance for spread spectrum communication. But conventional PN has low complication and low security etc. So we hope to obtain lots of PN sequences with good performance.The discovery of chaotic dynamic system offers the broad way of PN sequence. Chaos is a convinced and random kind course that appears in the nonlinear system. It is a nonperiodic and an irregular course. It is not convergence but have a bound and sensitive to its initial value. So it can generate enough PN sequence with good correlation property.This paper has discussed the system of spread spectrum communication, analyzed the structure of the system, then we simulated DS-SS system by the...