Hi Zhenhua,
gr-gsm should be a good project for you and for the community. I wish you
success.
You may want to look at the slow frequency hopping implementation of airprobe
that is placed here: https://github.com/BogdanDIA/airprobe-hopping.
It uses PFB to split a 20mhz band received with USRP-N210 into GSM channels and
then use all of them according to the hopping algorithm decoded on the
Immediate Assignment message and SI 1. It is not a perfect implementation as
airprobe is not perfect too, that is why I think this will be a good project.
The hopping patch has been done two years ago and has API for gnuradio3.6 era.
I did not update it yet on 3.7. Here is small paper I wrote at the moment of
creating a patch. It may be of help to you.
http://yo3iiu.ro/blog/wp-content/uploads/2012/04/Evaluating_GSM_hopping_V1.1.pdf
Bogdan
On Tuesday, March 11, 2014 5:40 AM, zhenhua han <hzhua...@gmail.com> wrote:
Hi all,
As Martin Braun noticed in the mail list yesterday, I haven't open my proposal
here.
Here is the link:https://github.com/hzhua/grgsm_proposal
If you have any suggestions, please don't be hesitate to contact me.
Thanks to Sylvain Munaut for his help on reviewing my first draft.
Thanks to Piot Krysik for his suggestions on gr-gsm.
Best wishes,
Zhenhua
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