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扩频通信系统与传统的通信系统相比,具有良好的抗干扰能力、抗多径能力等优点,而被广泛应用。最常见的扩频通信系统的工作方式有直接序列扩频通信方式和跳变频率扩频通信方式。本文利用System View软件作为平台,研究了直接序列扩频通信方式的仿真实现问题。设计了系统仿真模型,并给出了仿真结果分析。根据仿真结果显示,对于直接序列扩频系统,在相同误码率下,增大扩频增益,可以提高系统输出端的信噪比,从而提高通信系统的抗干扰能力。
Spread spectrum communication system compared with the traditional communication system, has good anti-interference ability, anti-multipath ability, etc., but has been widely used. The most common working methods of spread spectrum communication systems are direct sequence spread spectrum communication and hopping frequency spread spectrum communication. In this paper, the use of System View software as a platform to study the direct sequence spread spectrum communication simulation of the issue. The system simulation model is designed and the simulation results are given. According to the simulation results, it is shown that for direct sequence spread spectrum systems, increasing the spreading gain at the same bit error rate can improve the signal-noise ratio at the output of the system, thereby improving the anti-interference ability of the communication system.