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Technical discussion about Matlab and issues related to Digital Signal Processing.
Problem with IFFT and FFT in Matlab
waqasabdullah85 - Mar 18 2010
Hi,
I am working on an OFDM system using Matlab. The bits received at the receiver have a constant error ( i.e., avg 200 bits out of 1000 are always wrong).. when I decreased no... 
how to draw this kind of figure in matlab [1 Attachment] [2 Articles]
chenwj0409 - Mar 18 2010
I have a time signal, and if I calculate time-frequency spectra distribution, I'd like to draw a figure in which x axes is time, y axes ia frequency, like the figure in the attach... ActiveX interface for VLC.
Ahmad - Mar 18 2010
Hello All,
I need to know how can i take a snapshot from VLC program which takes its input from an External USB device using MATLAB.
I need to know how can i configure the in... Code for plotting shifted step funcion in S (laplace) domain.
kurr...@gmail.com - Mar 12 2010
Hi,
I am doing a work on analysis of transient nature when the supply of a dc motor is suddenly stopped. The transfer function of the motor I have derived is in S-domain, becau... funtion int(f,x,a,b)
solankiraghav - Mar 9 2010
Hi to All,
I want to integrate the following funtion (H) wrt varaible l. The other code is below
........................
h = 6.6e-34;
c = 3.8e8;
K = 1.38e-23;
T = 5000;
... USB interface help.
Abo3emad - Mar 9 2010
Could you please Help me?
I want a book or a tutorial which can help to do usb interface using Matlab.
Thank you in advance
... EDGE MODULATION:__ HOW TO integrate as per the following FUNCTIOn
ajayg_lmg - Mar 9 2010
PLEASE HELP ME IN WRITING THE CODE FOR THE linearized GMSK pulse..
I'M NOT ABLE TO FIND THE DEFINITE INTEGRAL OF A FUNCTION ,, WHOSE UPPER LIMIT IS A VARIABLE...
I' HAVE TO IN... Image segmentation and tracking .... HELP!!! anyone got a clue? [2 Articles]
skms125 - Mar 7 2010
HI,
I would appreciate some help....
I am trying to write a program in MATLAB that will segment moving objects, for example cars, from a series of images (extracting each frame... Using Embedded MATLAB with Wavelet Toolbox.
Ahmad El-Saeed - Mar 6 2010
Hello All,
I need to ask if anybody had managed to successfully generate C code from MATLAB code which uses Wavelet toolbox functions like wptree. Does anybody have trials in th... MATLAB Code Correction ..... [2 Articles]
chel...@yahoo.co.in - Mar 6 2010
Hi Experts,
My aim is to calculate the value of 'a'.For that first we have to find 'out'(see in the program) then differentiate that with respect to 'a' and equa... Matlab code doubt [2 Articles]
chel...@yahoo.co.in - Mar 3 2010
Hi,
I want to store the binary value generated by the following code in a file. Can you tell the coding for that ?
I = imread('samy','jpeg');
level = graythre... Modeling a Rician channel
Morris Vian - Mar 2 2010
Hi,
I am using the "ricianchan" command to create my fading channel and then use the "filter" command to filter a baseband signal.
However, I am left wondering if this setup w... Comparing Array Elements of 2 x Different size Arrays [4 Articles]
fahad_imam - Feb 27 2010
Hello,
I am a newbie and need help to sort my experimental data in matlab, I got 2 x arryas of different size
Array A has values for time 0 till 20 in steps of 0.005
Array... how to input and output wav files in Spectral subtraction
Pradeep Wickramanayake - Feb 27 2010
hi,
i want to know the Boll's Spectral subtraction algorithm properly. though i
have it. i need to know what will be the input and output. and how to
implement it properly.
... I desire suggestions about sub-Nyquist signal processing tutorials, articles and books
jsmi...@aol.com - Feb 25 2010
I am hoping some one can point me to tutorials, introductory articles and books on sub-Nyquist signal processing. I would prefer documents with an emphasis on simulation and the... LMMSE comb-pilot OFDM
anne naa - Feb 22 2010
Dear all,
I have a problem in understanding LMMSE channel estimation in comb-pilot type of OFDM. I get stuck to find the auto covariance matrix of the pilot channel. for example:
... filter design
elham askari - Feb 21 2010
hi dears
I have designed a chebyshev 1 filter by matlab by impulse invariance method with these below codes
now I want to perform this filter on an image and see the result effe... HELP regarding mmread()
leelavathy narkedamilly - Feb 21 2010
Hi,
I am finding this error while using mmread()-
________________________________________________________
Warning: In the directory "C:\Users\WM",
mexDDGrab.mexw32 now sha... Modeling a Rician channel
Morris Vian - Feb 20 2010
Hi,
I am trying to use the “ricianchan” command to create my
fading channel and then use the “filter” command to obtain my received signal
after the channel e.g.
%Cr... active feature extraction
ritesh_suri2000 - Feb 19 2010
I am interested in extracting features from an acoustic echo signal, which shall be lauched into the sea. if somehow we can extract features which would be unique to objects in t... Request 4 Matlab Files of Manolakis' Statistical&Adaptive Signal Processing bk
C - Feb 19 2010
Hi,
I had borrowed this book from library, but McGraw Hill can't be bothered to supply CD to the buyer of textbook, and the weblink in printed in the book's to Matlab files no l... Kalman Filter for Clock Phase Drift
albr...@gmx.de - Feb 17 2010
I am looking for Matlab code for a Kalman filter for oscillator clock
phase drift estimation.
In particular, tracking long-term phase drift (not short-term jitter).
Any ideas ... Re: Mathworks, System Generator and Mcode problem
omer...@gmail.com - Feb 17 2010
This is probably because all your multiplies, add/sub within MCode block are all combinational, creating a long critical path. You may want add register stages using persistent and... a simulink question about upconversion in a Com system
rudy...@yahoo.com - Feb 17 2010
Hi,
I am trying to advance my knowledge on a QPSK communication system.
I found a simulink simulation that describes a communication system. I tried to contact the author, b... reading vedio file in matlab
London Manshester - Feb 17 2010
Hello,
Do any one know how can I read vedio in Matlab despite its extension?
Hope to get help ,
I have diffrent vedios with different extensions.
REGARDS,
KA... SVD Decomposition
Nikhil Gupta - Feb 17 2010
Hello fellas,
I'm working on digital Image watermarking algorithm through SVD decomposition with DWT2 transform.
After some manipulation with the S matrix (now say s') when i r... design a noise signal [2 Articles]
Laleh Mokhtarpour - Feb 17 2010
Hi
I want to design a narrow band singnal comprising frequencies of 100, 200, 300 and 400 Hz. it's variance is adjusted to 2, and a white noise with SNR of 30 db is added.
at t... A simple (maybe stupid) question :)
One Winged Angel - Feb 11 2010
Hello everybody,
Currently I have to generate random numbers with pdf like this:
pdf(x) = a*exp( -a*(x-b) )
I just wonder can I generate y with:
pdf(y) = a*exp(... : HOW TO GET 3-D PLOT FOR BISPECTRUM ESTIMATES
"fathima.zamrud" - Feb 11 2010
Respected sir/madam,
I want some information on MATLAB, I am using MATLAB version 7.0.0.19920 (R14) and operating system is Microsoft Windows XP version 5.1, in ... Re: how to upsample an image?!
kpk_...@yahoo.co.in - Feb 11 2010
hi Fatemah
The function 'upsample' upsamples the image but inserts zeros in the extrapolated regions. This is the reason you notice checkered appearance in the image as the valu... Image Recognition based on defined images [3 Articles]
Prasun Dhara - Feb 10 2010
Hi All
I have a image database which has several known images with its label.Now I want to compare this images with a unknown input image.
If any known image is found in the ... help needed-mmse
seba...@gmail.com - Feb 10 2010
hi friends,i am doing my master thesis on LTE.i am trying to implement mmse and svd estimation but i have some probleme
this is my mmse code,could some onw help me?
i have my... how can we run matlab m file step by step
engineer_aqil - Feb 10 2010
helo all
i want to run my m file in step wise..i mean to say that in matlab how can run step by step our command..
one way is this to select the selected line and then press f5... coding for estimating brain volume pls help
Shahina Ismail - Feb 8 2010
can anyone pease help me with the codings to find the brain volume using MR images in matlab.....pls help its very urgent....our project is in a very pathetic condition.
tha... Matlab based audio signal analysis
Boks - Feb 5 2010
hi.. im new here.. i hope you guys could help me out with my design project..
i am currently working on using Matlab to compare and analyze voice signals.. it will then be embbe... psd calculaton using simulink block [2 Articles]
nand...@ymail.com - Feb 3 2010
hai,
i am new to simulik and am using matlab 7.0 version.I want to calculate psd (welch) of a .wav file in simulink. but i dont have welch estimator in signal processing tool box.... Setting up Lyrtech SFF SDR
wardah mohd nor - Feb 1 2010
hi,
have u whether the lyrtech support Matlab 2008a or not. as we are previously forced to downgrade to Matlab 2006a in order for us to use lyrtech.hope this information help you.... Setting up Lyrtech SFF SDR
"lee...@rocketmail.com" - Feb 1 2010
Hi guys
I am having a problem seting up my Lyrtech SFF SDR development platform.
My goal for now is to run the FRS example on the board.The problem is that while installing the... Converting an analog 1Mhz wave to digital
swatiiguptaa - Jan 31 2010
Hi,
I am tying to perfrom ADC on a 1 Mhz signal. How can I sample it?
Swati
... How to place variables in specific order in generated DLL memory space?
"slick.corey" - Jan 31 2010
Does anyone know how to specify the order of the signals / variables / interface functions in the memory space of a DLL generated by the Real-Time Workshop Embedded Coder ert_shrli...