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Re: [Discuss-gnuradio] 25 MS/s at 16 bits I/Q vs. gr.sizeof_gr_complex
From: |
Daniel Bartel |
Subject: |
Re: [Discuss-gnuradio] 25 MS/s at 16 bits I/Q vs. gr.sizeof_gr_complex |
Date: |
Mon, 16 May 2011 19:51:09 +0200 |
Hello Alexander,
in fact my question was only a theoretical one, because I read in the
mailinglist about the ethernet connection and that 2 x 16Bit x 25MS/s =
800Mbit/s are used.
Concerning my hardware setup I've to look tomorrow, because it's not actually
my pc.
Am 15.05.2011 um 16:07 schrieb Marcus D. Leech:
> UHD converts the incoming samples to complex float, scaled into {-1.0,1.0}.
Does this mean, that there is a loss in accuracy, because a 32 bit data type
(one pair of gr_complex) is converted to a 16 bit data type (float)?
Best regards,
Daniel
Am 16.05.2011 um 16:24 schrieb Alexander Chemeris:
> Daniel,
>
> What hardware setup do you use to achieve 25MS/s? I wasn't able to
> get stable connection with more then 16MS/s, and even at 16MS/s I had
> drops.
>
> On Sun, May 15, 2011 at 17:04, Daniel Bartel <address@hidden> wrote:
>> Hello,
>>
>> I was wondering about a little conflict concerning the sizes of the data
>> types in GNU Radio.
>>
>> The UHD driver sends 16 bits I, 16 bits Q samples over the ethernet
>> interface at 25 MS/s and the return value of "gr.sizeof_gr_complex" is 8
>> bytes (64 bits).
>> How does this actually work?
>> I have looked for some documentation of UHD, but I wasn't were lucky.
>>
>> Best regards,
>> Daniel
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>
>
>
> --
> Regards,
> Alexander Chemeris.