Demodulation of CPFSK and MSK

[Sanjeev kumar]

Hello Everyone,
I have a urgent query regarding demodulation of CPFSK, MSK modulated data. As we can find components only of modulator in optisystem 13, but i don’t know how to demodulate data at the receiver end i am not able to get whether i received the data as it was transmitted or not. how could i do this. please make a valuable suggestions to help me over this. I am also going to attach a snapshot to get more about my issue.
thanks and Regards
Sanjeev Kumar

[Dr. Dhiman Kakati]

Hello Sanjeev Kumar,

At present I do not have the answer regarding MSK decoder, as this was put by me at this forum but did not get a solving answer, I have attached some links in another post Please have a look.. at reply no. 34165. you may find some clue there for the implementation.

BER Analyzer Response at different bit rates

Regards,
Dhiman

[Ranjeet Kumar]

Hi sanjeev kumar,
For demodulation of MSK we could use matlab components.
The following links may help you to design :

MSK transmitter and receiver

http://in.mathworks.com/help/comm/ref/mskdemod.html
http://in.mathworks.com/matlabcentral/fileexchange/24570-msk-modulation-and-demodulation
http://in.mathworks.com/help/comm/ref/comm.mskdemodulator-class.html
http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=163564

[Ranjeet Kumar]

Similarly, we could design the demodulator of CPFSK
The following links will help you:
http://in.mathworks.com/help/comm/ref/cpfskdemodulatorbaseband.html
http://in.mathworks.com/help/comm/ref/comm.cpfskdemodulator-class.html
http://opensiuc.lib.siu.edu/cgi/viewcontent.cgi?article=1011&context=ece_articles

[Sanjeev kumar]

Thank you ranjeet for the related article. i think i should design the CPFSK and MSK modulator rather than using inbuilt components only then i will be able to decode.

[SAHIL SINGH]

Hi all,

Thanks Ranjeet for providing useful information on demodulation of MSK and CPFSK.. I here seem to somewhat agree with sanjeev that designing the CPFSK and MSK modulator rather than using inbuilt components will provide benefical in decoding…

Regards

Sahil Singh

[Author]

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