Matlab

Adaptive modulation and coding
Hi, I am working on a system-level simulation in which adaptive modulation and coding (AMC) is used. Notice that, in system-level simulation we are not actually sending zeros and ones but instead we use measured SNR and BER vs. SNR curve to identify if an error occurred or not. Does anyone know how to implement this u... 25 Jul 2010 14:02

what is the difference between db1, db2,db3,... in wavelet analysis?
Hi everyone, Please help me to find the meaning of 'difference between db1,db2,db3,db.. in wavelet analysis of 1D discrete signal'. With thanks, aye ... 25 Jul 2010 14:02

Contour plot on 3D surface
Hi, Does anybody have any idea how to do this? I want to plot some contour lines over a 3D surface. I manage to plot several contour lines at the levels of z (z axis) that I want. But I can't do it for levels on the x or y axis. For example this prints the contour line at the z=0 level on my 3D surface ________... 25 Jul 2010 12:57

Selecting characters from filename
Hi, I have thousands of files containing various information about stocks. However, i want to make a list of dates but the file names vary in length as the stock ID's are between 2 and 4 characters long. For example, TSCO_20081225 TT_20081224 VED_20081224 If all stocks were the same character length i could si... 25 Jul 2010 17:16

Location of detected image using boundary trace
Hi all, I need some help in finding the location of an object in an image. I managed to convert the image from rgb2gray and then from gray to black and white. There after i removed the remaining unwanted objects by using bwareaopen function and then used the bwboundary function to find the boundary of the remaining ... 26 Jul 2010 11:37

Excel 2010 and actxserver
I'm running Office 2010 with R2009a, the following command does not work anymore: Excel = actxserver('excel.application'); it returns: ??? Error using ==> actxserver at 91 Server creation failed. Invalid ProgID 'excel.application' I've read somewhere that 'Excel.Application' is upposed to be the registry ... 12 Aug 2010 10:22

radon transform help
i am using the radon transform function of matlab and i see in the documentation that the line detected is drawn on the image in red, how to draw the line (i have a problem because the theta and rho is with respect to center not the top-left corner) ... 25 Jul 2010 11:52

Microsoft Powerpoint 2010 and Matlab
I use saveppt (http://www.mathworks.com/matlabcentral/fileexchange/340-saveppt) to directly place my Matlab plots into PowerPoint presentations. This has worked very well with office 2000 and office 2007 but I recently upgraded to office 2010 and office 2010 no longer supports MSXML 5.0 which makes actxserver('PowerPo... 25 Jul 2010 14:02

Locate axis in the centre (x=0, y=0, z=0)
Hi! I'm plotting 3D radiation patterns and at the moment I'm being somehow successful. Now I'm struggling with the axis. I'd like to plot the axis as single lines with origin in x=0, y=0, z=0 instead that starting in the botton left point. To show the direction of x, y, z as any antenna simulator does I tried ... 26 Jul 2010 08:20

pcm
i am working on my project which is pcm modulation simulink in matlab , both sender and reciever... i want to start and well i need some help . i know pcm , just describe me what element and blockset i need. and how should i start . thank all ... 25 Jul 2010 16:12