SWI：短波干扰

术语“ShortWave Interference”在学术及科研领域，特别是业余无线电通信中，常被缩写为“SWI”，以方便快速记录和使用。其对应的中文释义为“短波干扰”，指的是在短波频段内由自然或人为因素引发的信号扰乱现象，对无线电通信质量可能造成显著影响。

The absolute bandwidth of the shortwave is small, the interference is more serious.
短波频段绝对带宽小，干扰更严重。
The characteristics of shortwave and the reasons of intersymbol interference are studied. Based on the Nyquist theorem, the time domain equalization is described in details.
分析了短波信道特性和码间干扰产生的原因，以奈奎斯特定理为基础分析了时域均衡的原理。
The core problem of shortwave lies in how to keep normal communication under various interference environments.
短波通信的核心问题是在各种干扰下如何进行正常通信。
In shortwave communication, the quality and speed of communication are seriously affected by the intersymbol interference caused by multi-path transmission deriving from the characteristic of the channel.
在短波通信中，由于信道的特性导致多径传输，进而引起码间干扰，严重影响通信的质量和速度。
The paper analyzes the features of shortwave channel, and the method of Matlab simulation is adopted, simulates and discusses the Rayleigh fading, time delay spread and inter-symbol interference caused by multipath effect.
本文分析了短波信道的特点，采用Matlab仿真的方法，对由于多径效应而产生的瑞利衰落，时延扩展以及码间干扰等问题进行了仿真和深入的探讨。

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