Key Posts

Paper published

Posted in Key Posts, Project Related on March 2nd, 2011 by James – Be the first to comment

Let me just link the paper here:

Xu, J.Y.; Alam, F.; , "Adaptive energy detection for cognitive radio: An experimental study," Computers and Information Technology, 2009. ICCIT ‘09. 12th International Conference on , vol., no., pp.547-551, 21-23 Dec. 2009
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5407298&isnumber=5407064 

For new visitors – Please read

Posted in Key Posts on March 2nd, 2011 by James – Be the first to comment

Hello everyone :D

This article is for the new visitors (and potentially returning ones). I have got a lot of emails/comments with questions, and I will try to address some of them here:

read more »

UCLA

Posted in Key Posts, Rant on September 25th, 2010 by James – Be the first to comment

For people wondering who I am now, I am now with UCLA Electrical Engineering Department, currently doing my Masters.

read more »

CRLib public SVN

Posted in Key Posts on September 23rd, 2010 by James – Be the first to comment

So er.. Finally the public SVN is up for the CRLib, find it here:

svn co http://cr.jamesyxu.com/svn_pub 

A post dedicated to everyone in our little lab, building 80.

Posted in Key Posts, Rant on October 14th, 2009 by James – Be the first to comment

The end is coming, I think it’s time to introduce the people that were in this lab this year. We all worked on different projects, but hey we played the same games during breaks :P

read more »

Cyclostationary feature extraction through SCF

Posted in Key Posts, Project Related on September 7th, 2009 by James – 15 Comments

This is probably the last big thing I will do for the project this year. The articles are hard to read, and the maths behind the whole cyclostationary thing is daunghting at best… Anyway, I have managed to chew through some of that, and a proof of concept MATLAB simulation has been done.. There won’t be enough time to do this properly on the LabVIEW and my VSA box.. but oh well, the next person could probably carry on…

read more »

FM Radio receiver LabVIEW VIs

Posted in Key Posts, LabVIEW, Project Related on August 31st, 2009 by James – Be the first to comment

Ok so I forgot to actually include the VIs in the post back in June (http://cr.jamesyxu.com/?p=122), some people have been asking for it, so I will post the images here…. all files are expected to be open via SVN later though, so dont worry…

read more »

Adaptive energy detection

Posted in Key Posts, Project Related on July 14th, 2009 by James – Be the first to comment

Right, so one thing we did find over the past few weeks when doing channel sensing, is that if your window is out of place (so that only a leg of the signal is in the detection window), or too big (compared to the signal you are measuring), you are not going to get much from that detector.

read more »

Thresholding in Energy Detector

Posted in Key Posts, LabVIEW, Project Related on July 7th, 2009 by James – Be the first to comment

This post is a continuation from the last one (Preliminary wideband channel sensor part 1). Here I am just going to detail a small section of the labView subVI, namely the Thresholding part. Working from part 1, I have consolidated the threshold calculation into a single subVI (Usage in part 2):

read more »

Preliminary wideband channel sensor

Posted in Key Posts, LabVIEW, Project Related on July 7th, 2009 by James – 1 Comment

Started on a preliminary sensor in LabVIEW last week, I’m going to just summarize the basic ideas behind this part, and then put some screenshots here. Details will be in the report at the end of the project if anyone is interested

read more »