Microsoft SQL Server 2008 安装图解(Windows 7)

Microsoft SQL Server 2008 安装图解(Windows 7)


http://blog.csdn.net/Cexu2008/article/details/5498526

correct my understanding in FFT

fft()
fftshift()

sampling rate

http://www.mathworks.com/matlabcentral/fileexchange/25473-why-use-fftshiftfftfftshiftx-in-matlab-instead-of-fftx

f=200;
Fs=1000;
t=1:(1/Fs):10;
x=sin(2*pi*f*t);

fftlen=512;
figure; plot(Fs*(-256:255)/512,tmp(1:512))
fftshift(abs(fft(y,fftlen)))

NP-hard problem

How to prove the problem to be NP-hard?

Gnuradio and USRP tutorial at PwnHome Research

http://pwnhome.wordpress.com/category/gnuradio-and-usrp/

C++ block update in Gnuradio

When modifying the C++ blocks for algorithms, like /opt/gnuradio-3.2.2/gnuradio-core/src/lib/general/, in order to our modification effective, we need to do "sudo make install" in /opt/gnuradio-3.2.2/gnuradio-core/

Using “tee” to write to files and the terminal ZZ

Using “tee” to write to files and the terminal

$sudo apt-get upgrade 2>&1 | tee ~/apt-get.log

How to add C++ block in gnuradio (ZZ)

Here are the steps I use to add a block. I piggyback onto gnuradio-core/src/lib/general. 1) Copy test.cc, test.h, and test.i to gnuradio-core/src/lib/general 2) Edit gnuradio-core/src/lib/general/general.i, and add 2 new “include” lines (one for test.h and one for test.i) 3) Edit gnuradio-core/src/lib/general/Makefile.am, and add the 3 new file names in the appropriate place 4) In gnuradio-core, run “make” and “make install” Hope this helps!