FSK Modulation&Demodulation

[tommylionlee]

Hello

I have some question,I use the Labview Modulation Toolkit to write a VI

but the  input bit stream and Output bit stream are not the same

i don't know how i got this way, I hope someone can help me

 the condition :

input bits:1010,1100(8 bits)

Carrier frequency=25000Hz

M-FSK (2)=2

passband bandwidth (Hz)=1000

symbol rate (Hz)=100

FSK deviation (Hz)=5000Hz

[eyxingguang]

Hi,you should generate a synchronization parameter in your vi, please check the LabVIEW program in the attachment. your digital data should have a unique syn at the beginning, for example your data is 1010 1110,you should add a syn beginner like 1110 1011,and follow your useful data. so when you demodulate the FSK ,you can add syn sequence parameter as 1110 1011,and run vi, your correct result will come out.