Hi Wan, The labels below each of the stages¹ underneath your PFB block simply echo the top level parameters of the block. Each stage¹ is singular, your PFB has a total of only 2 taps.
Regards, Andrew On 6/17/09 11:37 PM, "[email protected]" <[email protected]> wrote: > Please see the attached. > > Thanks > > Wan > > > From: Andrew Siemion [mailto:[email protected]] > Sent: Thursday, 18 June 2009 4:14 PM > To: Cheng, Wan (ATNF, Marsfield); [email protected] > Subject: Re: [casper] question on sync pulse > > Hi Wan, > > What do you mean by a two-stage PFB? Can you send around a copy of your model > file? > > - Andrew > > > On 6/17/09 11:08 PM, "[email protected]" <[email protected]> wrote: > >> Hi: >> >> After reading the memo of sync pulse, I still feel a little bit confused. >> >> I use a PFB in my design. So I guess I have to include the order of PFB into >> the calculation. >> >> The order of PFB is 2. But there are two stage in the PFB. There are 2 taps >> in the second stage as well. So I set the reorder to 2 or 4? >> >> For the FFT, there are 2 order-2 reorder block in the bi_real_unscr_4x, so I >> recorder order should be 4. >> Its FFT unscrambler use an 8 order block. So its order is 8. >> >> So the sync period of FFT is 4*8*512/4 = 4096. Is this right? >> >> What I could not understand is the PFB. I use 2 order or 4? >> >> Thanks >> >> Wan >> >
