07-22-2019 11:10 PM
hello everyone,
I want to demodulate GMSK data using LabVIEW and usrp.for this I use MSK example from modulation toolkit and choose filter type: Gaussian filter but unable to demodulate the data.
kindly help me in this issue.
07-23-2019 09:41 AM
You need to look at the signal closely.
1. Where is the signal coming from ?
2. What is the symbol rate ?
3. What are trying to measure? EVM ? MER? BER? Raw Bits etc.
4. If you know of a known sequence in the message, you can try that sequence for synchronization
Hope the above helps. Let me know if you still face issues.
Regards
Sastry
07-23-2019 10:22 PM - edited 07-23-2019 10:27 PM
hi Sastry,
thanks for your reply
1-The signal is coming from digital radio.and received using usrp 2944.
2-the symbol rate is approx 3-4k.which is not known exactly.
3-i want to demodulate the signal and listen audio.
->I don't know how many samples per symbol is used.?
->How to demodulate the gmsk signal without knowing its modulation parameters?