GPRS, EDGE support

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Alexander Chemeris alexander.chemeris at gmail.com
Sun Jan 26 20:35:19 UTC 2014


Matt,

On Fri, Jan 24, 2014 at 9:15 PM, Matt Ettus <matt at ettus.com> wrote:
> I normally resist talking about our own products on this list, but since
> there is some incomplete information I will offer some corrections.  I won't
> speak to competitor's products.

Thank you for more details, this is appreciated.

>>  - Get USRP N (not USRP 2), if you want to have access to variety of
>> daughter boards, available for USRPs. Though it's quite expensive,
>> especially if you add a GPSDO to it.
>
> These are the highest dynamic range and will have the best RF performance.
>
>>  - Get USRP B200, if you want a small single-channel device. Though
>> you _may_ have issue if you start playing with handover, as it doesn't
>> have GPS or a stable enough reference clock.
>
> A GPSDO is available for B200, or you can use the 10 MHz input from an
> external source.  The B200 is by far the lowest cost option, and it has a
> high dynamic range in comparison to Lime-based solutions.  If you want
> diversity receive and dual transmit, you can get the B210 which is also a
> low cost option.

This is all correct. I just want to point that dual-channel with B210
is not (yet) supported by osmo-trx, so one will need a little bit of
effort to run it in dual-TRX mode.

-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru




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