Re: [Discuss-gnuradio] isolate channels from wideband

[Richard Bell]

I would add, this task you are trying to do is an advanced DSP topic. What you're looking for is a channelizer and this is optimally implemented using a polyphase filter bank. If you need a good reference on this, fred harris' book on Multirate Signal Processing for Comms Systems is a good.

http://www.amazon.com/Multirate-Signal-Processing-Communication-Systems/dp/0131465112

GNU Radio has channelizers built-in, but I've not used them yet, so I don't know how far they take you into this kind of task.

Rich

On Tue, Jul 21, 2015 at 9:17 AM, Martin Braun <address@hidden> wrote:

Or, given a regular channel spacing, you can use a polyphase filterbank
to split it into multiple narrow-band channels.

Cheers,
Martin

On 21.07.2015 09:10, Stephen Harrison wrote:
> A simple way in GNURadio is to use the frequency xlating fir filter to
> select individual channels.
>
> On Tue, Jul 21, 2015 at 8:39 AM, Markus Heller <address@hidden
> <mailto:address@hidden>> wrote:
>
>     Dear list,
>
>     I'd like to understand how to receive the 2m band as one wideband input
>     (144-146 MHz) and afterwards split the sample stream into various
>     channels (relay inputs, relay outputs for various relay frequencies).
>
>     I do know how to receive all of the 2m band, but I don't know how to do
>     the splitting.
>
>     How would I do that?
>
>     Thanks in advance!
>
>     br
>     markus
>     dl8rds
>
>
>
>
>     _______________________________________________
>     Discuss-gnuradio mailing list
>     address@hidden <mailto:address@hidden>
>     https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

>
>
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>


_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio