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From: | Marcus D. Leech |
Subject: | Re: [Discuss-gnuradio] Confusion about Sample rate |
Date: | Fri, 31 May 2019 23:28:49 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 05/31/2019 11:21 PM, Jiji Varghese
wrote:
A couple of different issues here: GnuRadio *generally* deals with *complex samples*. Complex sampling satisfies the Nyquist Sampling Criterion in a way that allows you to run those samples at a rate == bandwidth (more or less). Gnu Radio doesn't care, per se, about sample rates, and will pass your request on to the underlying *HARDWARE*. The hardware will, most definitely have limits and policies with respect to sample rate, and to answer the question "what sample rates are allowed" you need to refer to the hardware you're using. If you don't understand what the Nyquist Sampling Criterion is, you should definitely spend some time researching that, and how it relates to the kinds of things you might be wanting to do with samples, and why 1e6 is not an appropriate sampling rate for a signal with an information bandwidth of 22MHz. |
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