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[Discuss-gnuradio] Re: hi all, I want to support fpga to add a timestamp

From: John Wu
Subject: [Discuss-gnuradio] Re: hi all, I want to support fpga to add a timestamp when the usrp send and receive data package
Date: Fri, 4 Jun 2010 11:36:22 +0800

Hi all,
I learn from some document that usrp have take a timestamp in nanosecond with the data package. Can anyone tell me more detail about that? Since I have not receive usrp board I can not do the experiment to confirm it.


On Thu, Jun 3, 2010 at 11:40 AM, John Wu <address@hidden> wrote:
Hi all,
I need to measure the time of flight with the accuracy in nanosecond, now I found an ic that can measure the time in ns. So now I want to support fpga to read the timestamp when receive and send a data package with modifying the fpga firmware. Can someone estimate whether the usrp or usrp2 can achieve my goal without the performance drop? And is there any usrp fpga source document available?

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