[Hackrf-dev] Samp_rate & bandwidth

[Jiao Xianjun]

"sample rate at least twice of bandwidth by Nyqvist’s theorem"
This is true for single channel sampling.
HACKRF use IQ interleaved sampling (two channels). Under this case, sample
rate can be equal to bandwidth. This is not a violation of Nyqvist’s
theorem, still conformed to it.

On Tue, Nov 24, 2015 at 2:35 PM 김상혁 <tkdgur7896 at gmail.com> wrote:

> I know the range of sample rate is up to 20Msps and bandwidth is up to
> 20MHz.
>
> Also, sample rate at least twice of bandwidth by Nyqvist’s theorem.
>
> If I want send a data as maximum Tx rate, what can I do ?
>
> I tried to set channel bandwidth = 20MHz, samp_rate = 20MHz to Tx and also
> Rx
>
> However, the result is poor. Also, higher throughput is shown at bandwidth
> 16MHz, samp_rate = 20MHz.
>
> I’m confused the relationship between samp_rate and channel bandwidth in
> osmocom blocks.
>
> And how can I reach maximum sending rate / receive rate ?
>
> Thanks.
>
> Shawn
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>
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