good courses in CMU ECE/CS

Spring 2010
15-750 - Graduate Algorithms

Fall 2009
15-740 - Computer Architecture
15-849 - Cognitive Networking

Fall 2008
18-730 - Computer Security
15-853 - Algorithms in the Real World

Spring 2008
15-744 - Computer Networks
15-812 - Programming Language Semantics

Fall 2007
15-712 - Advanced Operating Systems & Distributed Systems
15-781 - Machine Learning

White space finder - by microsoft reseach

Microsoft Research WhiteFiService
A research platform to plan your white space network!

http://whitespaces.msresearch.us/

software-only approach for Power saving

SleepServer: A Software-Only Approach for Reducing the Energy Consumption of PCs within Enterprise Environments

USENIX 2010

by Yuvraj Agarwal and Stefan Savage and Rajesh Gupta.

http://mesl.ucsd.edu/yuvraj/

Tutorials on linux sym admin

Some nice tutorial/online book on linux system administration:

http://tldp.org/LDP/sag/html/index.html

http://tldp.org/LDP/lame/LAME/linux-admin-made-easy/index.html

http://www.yolinux.com/TUTORIALS/LinuxTutorialSysAdmin.html

http://www.linuxtraining.co.uk/download/new_linux_course_modules.pdf

http://www.ee.surrey.ac.uk/Teaching/Unix/

Good book

Good books really impart you the great knowledge from the fundamentals...

It is written in such a way that, you can really understand and explain on your own.

I am happy with the book "Fundamentals of Wireless Communications" by David Tse.

Thank U truely!

USRP2 noise floor generation

We can "usrp2_siggen_gui.py" located at gnuradio/gr-util/src/python
where we can set the parameters like central frequency, interpolation rate, amplitude of noise level.

In order to avoid some potential problem in USRP2, it is highly recommend to modify the amplitude level by changing the default at the function of "usrp2_siggen.py".

Generating the noise signal at one USRP2,
sudo python usrp2_siggen_gui.py -m 00:50:c2:85:32:97

Verifying the PSD by doing the FFT
sudo python usrp2_fft.py -m 00:50:c2:85:32:96

Some example data are collected:
in WiSeR lab environment, the background noise level is around -55dB(+30 = -22dBm). Same results are observed for antenna and SMA connector.
It seems like USRP board generating a large noise itself.