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Discussion Groups | Matlab DSP
Technical discussion about Matlab and issues related to Digital Signal Processing.
Confidence interval of fitted parameters
satyen20 - Oct 6 2008
Dear All,
I am trying to calculate the 95% confidence interval on parameters for my model fitted
using lsqcurvefit. The portion of the code and my function are attached below.... 
Image procesing
cesar acosta - Oct 6 2008
HI,
I want to "filter" an image and only left a color, in other words, i
want to supress all color that arent the color choosen.
I have read the both demo of image segmentat... Video processing in MATLAB
candy_y88 - Oct 6 2008
Dear friends,
I've been working on processing noisy video files using MATLAB. Does
anyone have any kinda experience in dis field to help me out?
i need sample video files corru... Usage "D(conj)"
HUSEYIN TOPAN - Oct 6 2008
Hi,
I linearize an equation and assign some values to the variables in Matlab. However Matlab use a shorthand as D(conj) and the process is terminated with the error caused thi... echo
george richman - Oct 6 2008
what does an echo look like when graph? How can i display the echo and
the original signal?
... ofdma for Wimax (IEEE 802.16e)
arash private - Oct 4 2008
hello every body
i want to simulate ofdma for Wimax (IEEE 802.16e) . i need to know how could i allocate subchannel and power allocation in simulink .
please help me.
than... linear least suqares [2 Articles]
lokeshs59 - Oct 4 2008
HOW to implement the Weighted Linear Least Squares
Estimation (Weighted LSE) algorithm. Apply your algorithm to the following
data sets (x1, y1, w1), …, (xN, yN, wN) where xi, yi... How to generate random noise voltage? [3 Articles]
khoo_nelson - Oct 3 2008
Hello, I'm quite new in using Matlab.How to generate a 2000-point
random noise voltage with a dc or mean value of 0 and an rms value of
10 V using a time step of 1 us.
I try lik... Basic SNR question [2 Articles]
usu_vlsi - Oct 2 2008
Hi,
I am kind of new to Signal Processing. I have two questions
1. I have a signal source, a in the lab, for eg. a 20kHz sine wave
generator. I connect it to a spectrum anal... Need info about image processing
cesar acosta - Oct 2 2008
Hi everyone,
i need any information about the basic aspect of image processing
using matlab and simulink. If you could refer me a good free tutorial
or book will be nice.
... matlab and adding step functions
Aaron Friedman - Oct 2 2008
I'm new to Matlab, and I would like to know how to add step functions.
I came up with a function y = u(t)where y(y> =0)=1 and y(y ... Re: Adding Zeroes to FIR Filter Coefficients to increase taps - Degrades Performance?
Jeff Brower - Oct 1 2008
Chinmoy-
> We have two FIR Filters, running on same input data, generated for different purposes.
> 1. FIR1 - N Taps (as generated in Matlab)
> 2. FIR2 - N+10 Taps (as gene... Read File in Simulink, piece after piece
ion....@gmail.com - Oct 1 2008
Hello all,
I am a beginner with simulink, and I would like to know how could I generate a block which gives as output the samples of a stored data.
I have this data stored in... Adding Zeroes to FIR Filter Coefficients to increase taps - Degrades Performance?
chin...@lntemsys.com - Oct 1 2008
Hi
We have two FIR Filters, running on same input data, generated for different purposes.
1. FIR1 - N Taps (as generated in Matlab)
2. FIR2 - N+10 Taps (as generated in Matla... Re: Dividing an Image into 3x3 Matrix [4 Articles]
Wisnumurti Kristanto - Sep 30 2008
Hi Jawaad,
Maybe you can just sample your image in 3x3 matrix ?
For example you have matrix:
A = 300 x 300 matrix
you can sample it by take:
a1 = A(1:3,1:3);
a2 = A(1:3,4:6... simulation of ofdm with QPSK in Rayleigh channel
dece...@yahoo.com - Sep 29 2008
hi;
i have simulated a general ofdm system but i am not having correct results. can any one rectify problems in this code. have i used correct formulas in this code? i mean does R... implementation of ofdm running on dsps by Realtime workshop
eman mahmoodi - Sep 28 2008
Hello
I'm working on the implementation of ofdm running on dsps(TMS320c6xxx). I have made my own simulink and matlab mfiles. My question is:
Does any one know how to test my work... Fminsearch funtion : oblige matlab to use integer parameters
sebastien boisseau - Sep 26 2008
Hello.
I am using the fminsearch funtion to optimize a problem with 2
parameters and it works but it just takes too much time.
I wanted to know if there is a way to oblige ... Converting Fortran code to a Matlab code
Ayate Abu El-Khair - Sep 25 2008
Hi all,
I am so interesting nowadays in calling a fortrun code from the Matlab or ,what I need is, converting a Fortran code to a Matlab code.
(How I can run a Fortran file as ... RE: Using XCORR Function
vcco...@yahoo.com - Sep 23 2008
Hi,
How do you use the XCORR function in matlab to determine and plot the auto correlation of a square wave? For example if g(t)=rect10. To plot my square wave I did the followi... polyphase decimator in simulink
cfy3...@yahoo.com - Sep 22 2008
Hi all,
I am trying to implement a polyphase decimator in Simulink environment. The problem I have is, how to relize the 1:n commutator switch? In Simulink, only n:1 switch i... How to normalize an image to zero mean and unit variance
verylijing - Sep 22 2008
Good everyone,
I am working on face recognition. I need your help on how to normalize
an image to zero mean and unit variance in MATLAB. In addition, I will
also appreciate si... How to Calculate Image Orientation in Matlab [4 Articles]
jawaad aslam - Sep 19 2008
Hello,
Can anybody tell me how to calculate Image Orientation in Matlab.
Regards,
Jawad Raza
... Nyquist fir filter design for pulse shaping
msrvasug - Sep 18 2008
Hi,
I have to design a nyquist interpolation filter which should satisfy all
the properties of pulse shaping i.e zero ISI and nonnegative magnitude
response etc.First I thought ... How to divide picture into 3x3 Matrices
jawaad aslam - Sep 18 2008
Hello All;
Hope you all r fine.
Can anyone tell me
1-How to convert an image into 9x9 or 12x12 Matrix?
2-How to divide above matrix into 3x3 matrices
Please help ... audio from avi file
Saman Naz - Sep 18 2008
Can any one help me in extracting audio from avi file in matlab. Which function will be used ?
Regards,
Saman Naz
University Of Karachi.
... what is the equivalent of initff in current matlab?
yu_li1982 - Sep 18 2008
I used to use matlab (older than v5.3) to train ANN, in which a
function , called initff was used. However this function is no long
available. I would appreciate very much if som... variance of Brownian motion vector in Matlab
fyrf...@yahoo.com - Sep 18 2008
Dear all,
I have a problem computing the variance of a Brownian motion vector and matching it to the expression in Papoulis's "Probability, Random Variable, and Stochastic Proce... fun = @minutie does not work...
Azril Nizam Muhamad - Sep 15 2008
Hello...
I am Azril Nizam, a final year student of electric n electronics engineering...i'm doing my final year project on fingerprint minutiae extraction...
i've found this ... re-set axis
plove14 - Sep 15 2008
I am having trouble with axis setting in Matlab.. As i have ploted
600x600 matrix as a contourf plot. The axis is showing as 1 to 600 on
both x and y axis. I need to set it as 9... related to Hierarchical Clustering [2 Articles]
umair liaquat - Sep 11 2008
hi
have anyone ever worked on hierarchical clustering ( found under Multivariate statistics under Statistics Toolbox)
if so kindly explain me how clusters are numbered aft... Wave-File - Fixed-Point Conversion
jakob_chr - Sep 10 2008
Hi everbody,
i just started to learn Matlab and i hope some of you can help me
regarding the following subject. I would like to read in a wav-file to
extract a certain timefra... MATLAB GUI help with menubar
sauw...@gmail.com - Sep 10 2008
Hi,
I've been having trouble with this for quite a while.. Hopefully some of
you will be able to help me.
I'm trying to make a gui with a menubar that has the option to ge... Parallel Concatenated Convolutional Codes (PCCC)/ Turbo Codes and SCCC Codes
sajiv29 - Sep 9 2008
Can anyone help me on creating matlab codes for PCCC and Serial
Concatenated Convolutional Codes (SCCC)?
I need to get the performance analysis in Rayleigh Fading and AWGN
chann... Real time 2D graph?
mariobatubara - Sep 9 2008
Dear all,
At now, i study about Radar data,but i'm still confuse about how to
plot those data in every get data which is the data will get in every
second. Then, I would like ... query related to a clustering problem
umair liaquat - Sep 9 2008
dear all
i am engaged in clustering the histogram data of a periodic signal with gaussian noise added,,, i am using the Hierarchical Clustering for this purpose
Hierarchica... Problems in RTDX Simulink -> Code Compose Studio V3.3 (CCS) about toolbox C2000
ruimach - Sep 8 2008
Hi,
I make a project that used Toolbox for DSP Texas
Instruments C2000. I tried to use the RTDX functions (write
and read) in Simulink for TMS320F2812 processor.
But when... Some papers needed
jamal_eee_03 - Sep 8 2008
Is there any one who has the following papers? If u have,Please send
to me.It will be very helpful for my work on "Speech Enhancement".
1. S. F. Boll, "Improving linear predictio... Manipulate symbolic (algebraic) expressions
Dilip Ahalpara - Sep 5 2008
Hi all,
I need to manage an array of algebraic expressions (e.g. 2*x^2+3*x-5)
having binary operators (+, -, *, / and ^). Essentially what is
required is to evaluate a given s... Can any body help me about OFDM based thesis [4 Articles]
Alam - Sep 5 2008
Dear
I am studding in final year in electronics engineering, i have been making research and preparing thesis regarding with OFDM. To
understand OFDM more and mor...