Re: [Discuss-gnuradio] Channelizer mapping

[West, Nathan]

It works kind of like an fftshift. The center channel is 0, the lowest channel is nchannels/2 + 1 or so... I think your mapping could have 4 on the end to get the whole sequence.

On Fri, Jun 2, 2017 at 11:25 AM, John Ackermann N8UR <address@hidden> wrote:

Is there a basic rule for how to assign channel numbers to the PFB channelizer output?  I seem to be too dense to figure it out from the docs.  I just want to pull the channels out in order of their RF frequency, low to high.

I currently have a 7 channel channelizer which seems to work properly after I farted around to get this map: [5,6,7,0,1,2,3] using a "Channels" value of 8 (note that channel 4 is thrown away).

Now I want to extend the number of channels, and the number may be even or odd.  From Tom Rondeu's tutorial, I get the sense that the mapping changes based on even or odd channel count.

Is there a basic rule to develop the map for the case of RFch0 = ch0, RFch1 = ch1, etc.?

Thanks,
John

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