多路通信系统中的信号分割

Signal dividing in multi-communication system

现代通信系统中多采用多路复用的方式 ,而在多路通信系统中需要进行信号的分割 ,其目的是使多个用户能够正常的通信 .从泛函分析的角度讨论了目前常用的频分、时分及码分等几种多路通信方式中信号分割的基本原理 ,得出对信号线性分割的充要条件 :线性无关性 ,并提出了更为严格的充分条件 ,即正交性 .但是一般可以将线性独立的信号经过适当变换转成正交信号 .

Multi\|access technology is usually adopted in modern communication systems. And in order to ensure normal comunications among many users, the signal is divided into multi\|communication system. Applying functional analysis to discusses the basic principium of FDM, TDM and CDMA in common use now, we get the sufficient and essential condition to divide the signal: linear and irrespective character; and bring forward the strict sufficient condition: orthogonal character. But linear absolute signal is transformed into orthogonal signal commonly. Finally, to interpret the signal dividing process from geometry projective viewpoint.