Re: Implementation of OFDM TX and RX using GNURadio and USRP

On 27/11/2022 04:01, Marcus D. Leech wrote:
>>>
>>> Could anyone please give me advice how to extract certain carriers
>>> from the FFT bins of the demodulator?
>
> I just thought of this little "idiom" for picking a single item from a
> vector, that doesn't require that you write your own block.
>   It takes advantage of "busports" (as a notational convenience).

Hi,

Another option for extracting one or a range of items from a vector is
to use Vector to Stream followed by Keep 1 in N or Keep M in N. See near
the bottom of this flowgraph for an example:

https://github.com/daniestevez/reu-2022/blob/main/polyphase/polyphase_filter.grc

Best,
Daniel.