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Re: [Discuss-gnuradio] usrp A/D scaling question
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From: |
Johnathan Corgan |
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Subject: |
Re: [Discuss-gnuradio] usrp A/D scaling question |
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Date: |
Wed, 8 Jul 2009 10:09:34 -0700 |
On Wed, Jul 8, 2009 at 10:00, Brian Padalino<address@hidden> wrote:
>> What am I missing ??
>
> Decimation and Interpolation using CIC filters causes bit-growth which
> is only marginally compensated for using bit-shifts.
>
> Moreover, CORDIC mixing causes bit-growth in the output vector as well.
In other words, the samples arriving at the host are not the samples
coming out of the ADC.
Johnathan