翻译为英文摘要

This paper spread-spectrum communication technology theoretical basis and method, the use of MATLAB Simulink visualization tools established a spread spectrum communications system simulation model. Each module described in detail the design. The simulation and modeling that attention should be paid to problems. Simulation in the given conditions, running a simulation program, was expected simulation results. At the same time. Using simulation system established to study the spreading gain output signal to noise ratio and the relationship between the results showed that the same error rate, the increased spreading gain. The system can output the signal to noise ratio. To improve communication system anti-interference capability.