I use the PFB channelizer for incoherent de-dispersion for pulsar
monitoring in radio astronomy. It's quite efficient for producing N
equally-spaced channels.
For randomly-spaced, individual frequency-xlating FFT filters might be
better.
On 2015-07-21 13:51, Richard Bell wrote:
> 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
> [3]
>
> 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 <[email protected]> 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 [1]: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 <[email protected]
>>> <mailto:[email protected]>> 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
>>>
>>>
>>>
>>>
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>>> Discuss-gnuradio mailing list
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>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio [2]
>>
>>>
>>>
>>>
>>>
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>>
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Links:
------
[1] tel:21.07.2015%2009
[2] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[3]
http://www.amazon.com/Multirate-Signal-Processing-Communication-Systems/dp/0131465112
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