Hi, Jouko,
On Aug 28, 2009, at 11:01 , Jouko Ritakari wrote:
On Fri, 28 Aug 2009, David MacMahon wrote:
We need a packet-enabled PFB and FFT, and then we could discard this
synchronizer business, but until then, we are stuck using a
synchronous
system. We are running at 1.6 Gs/s.
Do you expect the packet enabled PFB and FFT to alleviate the
synchronization challenges? If so, can you please elaborate on
that. It sounds great, but it runs counter to my intuition.
It should really be easy, just wait until all packets have arrived,
then start processing. No great performance loss there. You get the
"packet arrived" signal from the XAUI.
Isn't this inherently a heavier weight approach than "wait until all
sync signals have arrived, then start processing"? I mean if the non-
simultaneity of sync pulses received across multiple XAUI streams is
a challenge, won't the non-simultaneity and non-sequential ordering
of multiple packets received over a network be an inherently bigger
challenge?
We have done this in the last ten or fifteen years with great results.
On what platforms and bandwidth?
Thanks,
Dave
