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Re: [Discuss-gnuradio] spectrum record

From: Martin Braun
Subject: Re: [Discuss-gnuradio] spectrum record
Date: Mon, 28 Jul 2014 10:27:34 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

BTW, 12.04 is perfectly fine for GNU Radio dev.


On 07/28/2014 05:24 AM, gsmandvoip wrote:
> Hi Marcus, list,
> Thanks for swift response.
> You are right about openBTS, but at the same time I am using really old
> system (12.04) havent formatted for years due to its required
> installation, which can turn into real time consuming tasks thats why
> dragging it as long as I can avoid above situation.
> Now Decimation, yes its seems right to me as well, but when I am trying
> to decode I am getting SCH errors (I am using channelizer.py given in GR
> example directory for this purpose) with following configuration
> channels= 10
> sample rate= clock rate/decimation
> pfb decimation= 4
> OSR= channels/pfb decimation= 2.5
> but when I am recording single frequency with 156 decimation, it works
> just fine.
> partially I believe this question belongs to airprobe mailing list, but
> think there is very little or null development on it, thus thought to
> coin it here, a much active list.
> I want to make sure I am not doing anything wrong in spectrum recording
> and channelizing afterwards once it comes to airprobe, will give a head on
> Also if libusrp is the only bottelneck for me, I will change my system
> configuration and install GR-3.6 (which I think supports openBTS and UHD
> as well)
> at moment I am moving like headless chicken between GR and airprobe, not
> sure who is and what is going wrong, please spread some light here.
> Thankyou
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> Discuss-gnuradio mailing list
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