|From:||Kyeong Su Shin|
|Subject:||Re: [Discuss-gnuradio] Confusion about Sample rate|
|Date:||Sat, 1 Jun 2019 06:03:24 +0000|
To whom it may concern:
While I mostly concur with Marcus's response, I would like to note that maybe you can get away with a lower sampling rate (lower than the Nyquist rate) since you are working on spectrum sensing (not on decoding the full WiFi signal).
Actual sampling rate needed by your application will depend on the spectrum sensing algorithm and various performance factors that you want to use.
Kyeong Su Shin
보낸 사람: Marcus D. Leech <address@hidden> 대신 Discuss-gnuradio <discuss-gnuradio-bounces+address@hidden>
보낸 날짜: 2019년 6월 1일 토요일 오후 12:28:49
받는 사람: address@hidden
제목: Re: [Discuss-gnuradio] Confusion about Sample rate
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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