Notes on the Theory of Modulation
Notes on the Theory of Modulation
复制标题
DOI：
10.1109/proc.1963.2322
复制
发表时间：
1922-02
影响因子：
--
通讯作者：
J. R. Carson
中科院分区：
文献类型：
--
作者：
J. R. Carson
对“调频”传输系统(通过改变辐射波的频率进行传输)进行了数学分析，并将这种传输方法在给定速度下占用的频带宽度与通过幅度变化传输的相应频带的宽度进行比较。证明了采用间隔波或补偿波的调频方式，无论是占用频带的宽度，还是信号波形的失真，都不如变幅方式。
The transmission system of "frequency modulation" (transmission by variation of the frequency of the radiated wave) is mathematically analyzed, and the width of the band of frequencies occupied by this method of transmission at a given speed is compared with the width of the corresponding band for transmission by amplitude variation. It is proved that the frequency modulation system using a spacing or compensating wave is inferior to the amplitude variation system both as to the width of the frequency band occupied and as to distortion of signal wave form.