Hi All, I was wondering how the amount of "channel width" used can be controlled and if it is determined by the kind of modulation being used.
For example, I used tunnel.py (using GMSK modulation) and transmitted packets using board A and then captured the energy in the air using usrp_spectrum_sense.py on board B. Attached figure shows the result of the experiment. I see that using GMSK occupies a channel width of around 5 Mhz (2.418Ghz to 2.423Ghz) around the center frequency. Is this channel width an independent parameter ? or is dependent on the modulation (gmsk) ? I am interested in knowing how to "tune" this parameter. I appreciate the help. Thanks much! Regards Shravan
gmsk.png
Description: PNG image
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