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From: | Paul M. Bendixen |
Subject: | Re: [Discuss-gnuradio] Costas loop and M&M algorithm on FPGA |
Date: | Thu, 15 Dec 2011 09:59:59 +0100 |
Hi Paul,
I do not have one. Do you implemented them before?
PN
From: discuss-gnuradio-bounces+phonenaing.myint=address@hidden [mailto:discuss-gnuradio-bounces+phonenaing.myint=address@hidden] On Behalf Of Paul M. Bendixen
Sent: Thursday, December 15, 2011 4:48 PM
To: GNURadio Discussion List
Subject: Re: [Discuss-gnuradio] Costas loop and M&M algorithm on FPGA
Hello Phone
Do you have a git repo that one might throw in ones two coppers?
Best
Paul
2011/12/15 Phone Naing MYINT <address@hidden>
Hi,
Anyone here implemented freq/phase correction and symbol timing correction in USRP’s FPGA?
Recently I implemented Costas loop and Muller & Mueller algorithm in RTL by referring the gnuradio code. Now I’m testing it on FPGA. I can get correct demodulated data(DQPSK) at initial few thousand symbols. After that I’m getting all rubbish data.
I think the problem with my RTL implementation is not good enough bit-resolution (unlike implementation on PC). Currently I’m using 15-bits resolution for decimal part. Anyone has any suggestion ?
PN
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