[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] how to stop the top_block and restart signal tran

From: Yan Nie
Subject: Re: [Discuss-gnuradio] how to stop the top_block and restart signal transmission
Date: Wed, 23 Feb 2011 14:22:03 -0500

Hi Jason,

I really appreciate your help about the problem that I got. The info related to 
the GNURadio and the USRP that I'm using is listed in the following.
> Please confirm that you just see the carrier, not your modulated
> signal when using the lock()/unlock()

I checked the result of using lock()/unlock() by correlating the down converted 
signal with the Barker code, at the transmission pause interval, there is no 
correlation peak. Therefore, it turned out there is no code transmitted during 
the transmission pause interval. Is it a right way to test if there is Barker 
code transmitted during the transmission pause interval? Is lock/unlock working 
for completely turning off the signal transmission for 5ms? However, I'm sure 
when using lock/unlock method still gives at least carrier signal in the 
pausing interval, which is observed on the oscilloscope.

> Also, please tell us:
> What version of GNUradio are you using?

The version of GNUradio that I'm using is GNURadio 3.2svn

> What hardware are you using? USRP?  which daughterboard?

I'm using USRP1 with LFTX daughterboard plug-in. (similarly, at the receiver 
side,USRP1 with LFRX plug-in is utilized. )

> Are you using UHD?

I'm not using UHD.

Thank you so much for all of your help!


Attachment: ynie3.vcf
Description: Card for "Yan Nie" <ynie3@uwo.ca>

reply via email to

[Prev in Thread] Current Thread [Next in Thread]