On Fri, Jun 19, 2015 at 3:07 AM, Marcus Müller <marcus.muel...@ettus.com> wrote:
> Hi Ben, > > yes, that should work; as you've guessed, the polyphase channelizer > doesn't really "care" what your filter looks like. That includes the band > edges, too, so your last channel will overlap with your first. > > Best regards, > Marcus > > > On 06/19/2015 03:14 AM, ben Gee 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. > > would you just set the taps to have the right bw and lowpass filter > width (in this case it would be 1MHz to create a 2MHz channel), then set > the number of outputs on the channelizer block in grc to be 10? > > > thanks, > -b > > Also, look for the paper by harris and Rice, "Digital Receivers and Transmitters Using Polyphase Filter Banks for Wireless Communications." There some good stuff in there about adjusting the bandwidth versus the sampling rate. Tom
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