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nambvarun / gnuradio-gsm-signal-capture

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Questions about Parameter #1

Open bsun003 opened 7 years ago

bsun003 commented 7 years ago

Hi Varun,

I'm confused about why you chose N = 13.3k in block "keep 1 in N". Also, I went over the IV A part (GSM) of your paper, I don't know why after the decimation your sample rate change into 1 sample/second and the sample rate of sink is still 1 Msamples/second.

BR,

Bojun

nambvarun commented 7 years ago

If I recall correctly, I chose N = 13.3k because that was how I limited the number of samples I logged down. As for the 1M samples/second in the sink, I don't recall that value having any effect on the logging so I left it at that value.

bsun003 commented 7 years ago

so what is your sample rate overall? how do you know how many samples you have before and after the decimation?

nambvarun commented 7 years ago

I think it was 1 S/sec. You'll need to run the code and see. I remember that whenever I changed the firmware version, the sample rate would change. I think there might be some bottleneck that we're not aware of.

I would run the code and see what it outputs.

nambvarun commented 7 years ago

I used to just test it out and see what happened.

bsun003 commented 7 years ago

How did you get the result of sample rate is 1 sample/second? before decimation I think it is 1 Msamples/second and you took N = 13.3 K, that would change into 13.3 Ksamples/second (correct me if I'm wrong).

Yes, for the sink, I changed the sample rate as well, it doesn't change the amount of samples. I totally get lost about the sample rate.