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从现代军事通信和导航抗干扰出发,论述了扩展频谱通信系统,在射频带宽受限的条件下,高速传输数据时,由于抗干扰处理增益难以提高,造成了多个强干扰同时作用于扩谱接收机前端时,系统性能严重恶化。为了解决这一问题,作者把共道分离与扩谱技术相结合,在分析其工作原理的基础上,对其进行计算机仿真,证明其方案与现有的方法相比,不但对多个干扰得到有效抑制,而且对有用信号不产生损失和失真。
From the perspective of modern military communications and navigation anti-jamming, this paper discusses the spread spectrum communication system. When the radio frequency bandwidth is limited, the gain of the anti-interference processing is hard to be increased when the data is transmitted at a high speed. As a result, multiple strong interferences act on the spread spectrum When the front of the receiver, the system performance is seriously deteriorated. In order to solve this problem, the author combines the common channel separation with the spread spectrum technology. Based on the analysis of its working principle, the author simulates it by computer and proves that compared with the existing methods, Effective suppression, but also on the useful signal does not produce loss and distortion.