Re: [Discuss-gnuradio] overlapping channels in polyphase channelizer

[David Donley]

On Jun 18, 2015, at 6:14 PM, ben Gee <address@hidden> wrote:

Is it possible to have overlapping channels in a polyphase channelizer? say you have 10MHz of bandwidth, and you want to break it up into 10 channels, each 2MHz wide with the center frequencies being 1MHz apart. 

Hi Ben, perhaps this paper would be helpful. http://static1.1.sqspcdn.com/static/f/679473/24573007/1395369129837/rondeau_gr_filtering.pdf?token=96KRK5gwTcSMhOfiIaaoFKDjZJk%3D

It describes a way to rig the filter in order to split a signal into channels using the polyphase channelizer so that no information is lost at the channel boundaries. You could use this technique to split your signal into 1 MHz segments and then join the 1 MHz segments together into the overlapping 2 MHz channels. Another thing that might work is to use two channelizer blocks, each generating five channels.