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From: | Phone Naing MYINT |
Subject: | Re: [Discuss-gnuradio] Costas loop and M&M algorithm on FPGA |
Date: | Thu, 15 Dec 2011 08:50:00 +0000 |
Hi Paul, I do not have one. Do you implemented them before? PN From: discuss-gnuradio-bounces+address@hidden [mailto:discuss-gnuradio-bounces+address@hidden
On Behalf Of Paul M. Bendixen 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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