Frequency Shift Keying (FSK) Digital Modulation MATLAB Simulation, With MATLAB Code
Defining FSK (Frequency Shift Keying):
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through carrier frequency. The simplest FSK is binary FSK (BFSK). BFSK uses a pair of discrete frequencies to transmit binary (0s and 1s) information. If the number of symbols to transmit is more than 2, so we will just have to use as many carriers as the number of symbols.
The given example of MATLAB Simulation of Frequency Shift Keying (FSK), the user is asked about the frequency of the two carrier wavea, Message periodic pulse & the Amplitude of the waves (considering for square message wave & both carrier wave have equal amplitude). The frequency of the carrier wave will change from f1 to f2 or vice versa whenever a zero is changed to 1 or vice-verso. The frequency will not change if in 2 successive time period there is no change in message bit value.
The MATLAB below code lets the user to plot 4 graphs, namely 2 graph plot of The Carrier Waves (Sinusoid), The Binary Message Pulse & The Modulated Wave.
MATLAB Code FOR FSK (Frequency Shift Keying) BFSK in this case:
|Frequency Shift Keying (FSK) Digital Modulation MATLAB Simulation|