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
<mailto: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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