摘要
本文提出一种适用于卫星通信的、用离散傅里叶变换(DFT)方法实现n路码元同速的移频键控(FSK)调制解调。详细讨论了这种调制解调原理、实现的基本条件与方法,分析了干扰误差及抗干扰能力,采用这种方法可以有效地利用带宽、增加通信容量和避免制作带通滤波器的困难。
In this paper we proposed a method of DFT (Discrete Fourier Transform) with which an n-channel FSK Modem can be implemented. The FSK Modem that each channel beats the same bit-speed, is adaptive to the satellite communications. The Modem theory, the basic requirements and the method of Modem implementation are discussed in detail. The errors resulting from disturbance and anti-disturbance ability are analised. By using this method which implements the n-channel FSK Modem, the bandwidth can be efficiently utilized, the communication volume can be increased and the difficulties in made up of the bandpass filters can avoided.
出处
《通信学报》
EI
CSCD
北大核心
1989年第1期74-78,共5页
Journal on Communications
