扩时通信与扩频通信的特性对比及其不同应用形式的展现

Comparison of Characteristics of Time Spread Communication and Spectrumspread Communication and Its Presentation of Different Application Forms

时域与频域之间存在对等关系,与扩频通信对等的通信传输方式自然就是扩时通信,但在文献与工程中较少有对扩时通信的详尽分析与应用示例。针对这一情况,在对扩时通信原理及扩时与解扩时流程完整阐述后,从扩时码序列、扩时信号产生、解扩时抗干扰以及扩时多用户通信等多个方面与扩频通信的对应特性进行了逐一对比,在此基础上指出噪声通信与变换域通信实际上是扩时通信的一种特殊应用形式,属于扩时通信的类别范围。最后,通过仿真验证了前述理论分析与应用对比的有效性与正确性,从而为在理论模型上更好地理解扩时通信以及在工程项目中更广泛地应用扩时通信提供了重要参考。

There is an equivalent relationship between time domain and frequency domain.The communication mode equivalent to spectrum-spread communication is naturally time-spread communication.However,there are few detailed analysis and application examples of time-spread communication in literature and engineering.In view to this situation,after a complete description of the principle of time-spread communication and the process of time spreading and dispreading,the corresponding characteristics of spectrum-spread communication are compared one by one from the aspects of time spreading signal generation,antiinterference in dispreading and multi-user communication.And on this basis,it is pointed out that noise communication and transform domain communication are actually a special application form of time-spread communication,which belong to the category of time-spread communication.Finally,simulations indicate the validity and correctness of the above theoretical analysis and application comparison,which provides an important reference for a better understanding of time-spread communication in theoretical models and the wider application of time-spread communication in engineering projects.