众多的扩频通信抗干扰技术往往把有用扩频信号近似看作平稳随机过程。
In a lot of antijamming techniques for direct spread spectrum system (DSSS), the DSSS signal is approximately considered as a stationary process.
针对军事无线通信抗干扰和保密性需求，给出了自适应跳频通信系统模型。
Considering the need of anti-jamming and secrecy in military wireless communication, model of adaptive frequency-hopping (AFH) system is given.
仿真结果表明CVSD的语音通信抗干扰能力较强，是目前语音编码当中最优的编码方案。
The simulation results indicate that CVSD has a stronger anti interference ability of speech communication, and it is an optimum scheme of speech encoding at present.
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