PURPOSE:To obtain a frequency shift keying (FSK) modulator which is highly stable, has a narrow band, and does not required any adjustment and, at the same time, to prevent the complication of the constitution, by obtaining an FSK-modulated wave by switching two kinds of carriers, between ...
The signal generator provided the carrier signal, and the FSK modulator was used to modulate the digital data onto the carrier signal. The modulated signal was then transmitted through a medium and received by the FSK demodulator, which extracted the original digital data for analysis. Modulation ...
摘要: Switched-capacitor FSK modulator and demodulator have been designed and fabricated in silicon-gate CMOS technology. The modulator is based on a programmable SC harmonic oscillator, while the demodulator features an SC phase-locked loop.
A cost-effective continuous phase logic-based modulator and demodulator are provided to allow communications using binary frequency shift keying (BFSK) as well as M-ary FSK techniques. The modulator of the 1-bit precision modem architecture is based on a 1-bit precision numerically controlled oscill...
Create FSK modulator and demodulator System objects with modulation order 8 and 100 Hz frequency separation. M = 8; freqSep = 100; fskmodulator = comm.FSKModulator(M,freqSep); fskdemodulator = comm.FSKDemodulator(M,freqSep); Create an additive white Gaussian noise channel with a signal-to-nois...
After deciding it is an ASK of FSK signal, it starts to demodulate the signal. The outcome is, this FPGA-based modulator and demodulator are cheap, easy to configure, and can demodulate any type of demodulated signal. As it is reconfigurable, it's easy to deploy in any situation....
m-dpsk modulator passband和m-dpsk demodulator passband 分别是数字信号dpsk调制和解调的专用模块, 10、其中主要参数有: m-ary number:输入信号的阶次数,比如2-dpsk就是2阶的;symbol period:符号周期,即,一个符号所占的时间,这必须与信号源的sample time保持一致;carrier frequency:载波频率;carrier initial phase...
M-DPSK Modulator Passband和M-DPSK Demodulator Passband 分别是数字信号DPSK调制和解调的专用模块,其中主要参数有: M-ary number:输入信号的阶次数,比如2-DPSK就是2阶的; Symbol period:符号周期,即,一个符号所占的时间,这必须与信号源的Sample time保持一致; Carrier frequency:载波频率; Carrier initial phase:...
In this case, FSK modulator 40 and FSK demodulator 50 both consist of a FF, counter, memory, decoder, and logical gate performing digital operation, and input-output characteristics of demodulator 50 are made into binary output characteristics. 展开 ...
Modem(Modulator&Demodulator)是一种用于调制数字信号和解调模拟信号的设备。它的工作原理是将数字信号转换为模拟信号,以便它们能够通过模拟传输线路进行传输。Modem有两个主要部分:调制器和解调器。调制器将数字信号转换为模拟信号,以便它们可以通过模拟传输线路传输。解调器执行这个过程的逆过程,将模拟信号转换回数字信号。