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## Matlab S Function |

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1000 Threads found on edaboard.com: **Matlab S Function**

hiya
I'am using discrete Linear quadratic regulator equation to calculate the performance **function** of my system. the system is given by
xk = Ax(k-1) + Bu(k)

Robotics and Automation Forum :: 07-15-2011 02:18 :: sugarmeaowl :: Replies: **0** :: Views: **595**

@Mohammed EL_Kenawy: Perhaps you could post your **matlab** code so that someone can give some hints.

Mathematics and Physics :: 07-11-2011 12:51 :: flanello :: Replies: **8** :: Views: **1323**

Hello,
I am trying to control ANSYS' Designer with **matlab**
The following is a working command which draws a polygon:
invoke(oEditor,'CreatePolygon', {'NAME:Contents', 'polyGeometry:=', {'Name:=','Dipole_Top_Arm','LayerName:=','Dipole_Trace','lw:=','0mm','n:=',5,'U:=','mm', 'x:=',0.5,'y:=',1,'x:=',2,'y:=',1,'x:=',5,'y:=',10,'x:=',-5,'y:=',10

Electromagnetic Design and Simulation :: 08-22-2010 15:34 :: kato :: Replies: **1** :: Views: **2017**

Design control systems in **matlab** and other software today its very easy, get for example the transfer **function** of a circuit , then optimize it,... its kinda easy these days,...
what I'm looking for,... its a easy way , once I have my electronic system, mathematically speaking - get the design of the real circuit with its devices like loads, cap

PLD, SPLD, GAL, CPLD, FPGA Design :: 07-08-2011 04:12 :: hananeel :: Replies: **3** :: Views: **1427**

Use **matlab** or ADS...

RF, Microwave, Antennas and Optics :: 07-05-2011 21:50 :: BigBoss :: Replies: **3** :: Views: **862**

Max,
Thanx for your replies...you mean the **matlab** communication tool box? it is similar to octave syntax?
I mean Octave communications package. Before You use it, You should load this package by typing: "pkg load communications" (providing that You installed it earlier).

Digital communication :: 06-27-2011 06:41 :: Max Planck :: Replies: **9** :: Views: **3307**

Maybe you must evaliate it, not deterministically, but empirically .
Take a look on that **function**, wich coud help in this task :
Elapsed CPU time - **matlab**
+++

Mathematics and Physics :: 06-21-2011 02:12 :: andre_teprom :: Replies: **10** :: Views: **7113**

How to find the minimum/maximum bounds for h(m) using linprog **function** in **matlab** ? I have shown the hand calculations. Kindly guide me how to
proceed :
delta_p <= Summation(h(m).T(w)) ? Hd(w) <= delta_p
In passband, Hd(w)=1 ; delta_p=0.05
1 - 0.05 <= Summation(h(m).T(w))

Digital Signal Processing :: 06-17-2011 21:20 :: bmsec :: Replies: **0** :: Views: **1540**

Hy,
my problem is: using **matlab**, how can i plot in a bode diagram the result of a fft?
I have defined a **function** take after many elaborations bring out two vectors and than make the cross-correlation.
Than i make the fft of the cross-correlation obtaining complex conjuncted numbers, i need to have the bode plotting of the fft results.
Thank

ASIC Design Methodologies and Tools (Digital) :: 06-17-2011 09:20 :: always84 :: Replies: **0** :: Views: **2066**

if your looking towards using **matlab**, then if you have the communication toolbox there is a **function** called vitdec, which will decode it. Which QAM are you talking about 8,16... The ML decoder uses a sliding window and gives the most reliable output.
If you look at the communication toolbox most of what you have mentioned already exists. Includin

Digital communication :: 06-16-2011 00:40 :: kalyanasv :: Replies: **2** :: Views: **1480**

here is some details on the gaussian noise
Additive white Gaussian noise - Wikipedia, the free encyclopedia
also there is a **function** in **matlab** called awgn
you can use the help of **matlab** to get some details on it
or

Elementary Electronic Questions :: 06-14-2011 20:33 :: flashking :: Replies: **2** :: Views: **6870**

There is nothing wrong. **matlab** tf2ss algorithm use a canonical realization to compute num.den (see State space (controls) - Wikipedia, the free encyclopedia )
For a given transfer **function** den.num, there exist infinity possible state space representations. So, ABCD and a1b1c1d1 have th

Mathematics and Physics :: 06-14-2011 15:34 :: dramoz :: Replies: **1** :: Views: **2010**

Hello, my question should be simple. I wrote a **matlab** **function** which i´m using in a User-Defined simulink block. In this block i want to record the output in a vector, so i declare this vector has an emptys one (like a = ;) and than at every iteration i want to put the output in this vector. I alsoknow the final dimension of the vector, but ese

ASIC Design Methodologies and Tools (Digital) :: 06-14-2011 07:58 :: always84 :: Replies: **0** :: Views: **713**

simulink ports **matlab** code so I don;t see a problem with using symbolics. Unless the **function** is not in your workspace or you have not defined the symbol "x".
without syms x:
another way you could write it is : AOA(i,1)=solve((0.5.*ro(i).*v(i).*v(i).*s.*.1.*(x-alpha0))-(m.*9.81.*cos(x.*pi./180)),x);

Mathematics and Physics :: 06-13-2011 04:03 :: kalyanasv :: Replies: **2** :: Views: **1147**

how can i build a binary random generator in **matlab** and the output 0 and 1 with the same probability?
could you please write the code for me? cuz im a very newbie :P thank you
---------- Post added at 21:39 ---------- Previous post was at 20:35 ----------
i come up with a way to build it
i=1:100;
b=rand(

Digital Signal Processing :: 06-08-2011 20:39 :: chiu :: Replies: **6** :: Views: **987**

Hello,
In terms of encoding RSC .. Can we use coven **function** to encode it? I have **matlab** book that implemented RSC **function** to encode it ..and that confused me :?:
any:idea:?

Digital communication :: 06-08-2011 19:24 :: emma2 :: Replies: **5** :: Views: **2735**

the origin reference paper is:
Phys. Rev. B 60, 2610?2618 (1999)
Scattering-matrix treatment of patterned multilayer photonic structures
i try to reproduce its results using **matlab**.
the first problem is :
no matter which **matlab** **function** 'eig' i use, eig(M) or eig(M,w^2-k,'qz')(because M is an asymmetric matrix), to sove the equa

Electromagnetic Design and Simulation :: 06-02-2011 17:09 :: afack :: Replies: **0** :: Views: **1094**

i design 10th order analog low pass chebyshev filter & i want to plot its group delay versus frequency. i've already plotted using bode command , the phase & mag. response & i know that the group delay is the negative of the derivative of the phase of transfer **function** but how can i plot the group delay on **matlab** ??
thanks in advance !

Analog Circuit Design :: 06-01-2011 17:30 :: Heidi.Eissa :: Replies: **0** :: Views: **1685**

Hi all
I have written a **matlab** **function** to start a global macro 'single_ports' on a cst disign project. Basically it looks like this:
oCSTApp = actxserver('CSTStudio.Application');
oMWSProject = invoke(oCSTApp,'OpenFile',projectname);
invoke(oMWSProject,'RunMacro','single_ports');
**matlab** throws that there's a internal error in CST (...)

Electromagnetic Design and Simulation :: 06-01-2011 12:52 :: thorin :: Replies: **0** :: Views: **2084**

Hi,
While I'm not familiar with the newff() or the Neutral Network Toolbox, I am quite versed in advanced **matlab** programming and would be more than happy to take a look at your project.
Looking at the small code snippet and error messages provided, it would appear to be a formating issue, but without seeing the code in its entirety and data

Digital Signal Processing :: 05-30-2011 18:09 :: bigdogguru :: Replies: **4** :: Views: **2739**

See The Designer's Guide Community Forum - how to estimate the PSD of a complex signal in **matlab**

Elementary Electronic Questions :: 05-19-2011 16:45 :: pancho_hideboo :: Replies: **2** :: Views: **1226**

hi i am really new to **matlab** gui. i have been trying to learn some basics
from the internet but i am still unable to understand **matlab** gui very well. I
do not know how to pass "Values" from one **function** to another.
i have a burning question:
i have made a popupmenu which has a list of videos and a push button.
I would only like to (...)

PC Programming and Interfacing :: 05-18-2011 07:41 :: zener_16 :: Replies: **0** :: Views: **849**

1): I am not sure about it, are you asking how to use the calculator's error **function** ?
2): how about using **matlab** to solve erfc (Error **function**) or to approximate the Error **function** by Taylor series, or iteration method and etc. within the allowable error range?
For the definition of error **function**, you (...)

Digital communication :: 05-11-2011 01:22 :: iamaeag :: Replies: **4** :: Views: **3534**

You can use `assignin` **function** in **matlab** to assign value to variable in specified workspace and then you can use your workspace for simulink model

Digital communication :: 05-09-2011 10:11 :: paresh_saxena :: Replies: **1** :: Views: **2586**

Hi all,
I am using **matlab**'s Rayleighchan **function** to simulate a fading channel. My OFDM system chip rate/Sampling rate = 5.55 MHz, but giving this rate to the **function** will cause an 'Out of Memory' error, so I enter a sampling rate of 4096 Hz and normalize path delays to this by multiplying path delays by 5.55 MHz / 4096 Hz.
My (...)

Digital communication :: 05-08-2011 16:58 :: Ahmed Alaa :: Replies: **0** :: Views: **944**

Hi,
What is the log scale in **matlab** exactly: is it 10 log to the base 10, or just log to the base 10?
Thanks

Digital communication :: 05-05-2011 15:59 :: David83 :: Replies: **2** :: Views: **1668**

I've tried your program with **matlab** R2008a.
For
g=conv(im,b)
it works fine.
For
g=conv2(im,b)
I get the same error.
But if I do this
g=conv2(double(im),b)
then it gives me no error, and the result is
g =
Columns 1 through 18
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Digital Signal Processing :: 05-05-2011 13:42 :: zorx :: Replies: **2** :: Views: **2693**

Hi, Iam new here. i need to draw a triangle (could say random triangle) using M-file **function**. I need to determine 3 lengths and make sure it creates a triangle.
* Sum of 3 angles = 180 degree
or
* Sum of 2 lengths is greater than the third's
Can anyone help pls?

Elementary Electronic Questions :: 04-25-2011 14:05 :: P1a2u3l4 :: Replies: **0** :: Views: **2574**

Q: Write a **function** "xr = sreal(x)" which returns a symbolic expression representing the real (of "ireal(x)" for imaginary) part of x(t). (e.g. x(t) = exp(i*t) + exp(2*i*t)), any clues??
The real and imag **function**s don't return anything useful.
Having crazy problems with this :S
Any/All help well appreciated.

Mathematics and Physics :: 04-19-2011 21:50 :: juvan :: Replies: **0** :: Views: **1239**

hello every body. want to use dsexample4 **function** in delt asigma toolbox **matlab**.
when i run it i must use compile flattenStruct.c and in compile the error get me
`mexErrMsgTxt' undeclared (first use this **function**)
how can i solve these error?

Digital Signal Processing :: 04-19-2011 21:27 :: t_heidari_elc :: Replies: **0** :: Views: **581**

Hello
I need to compare the(7,4) hamming coded bit error probability with the uncoded bit error probabity and a Q **function**.
The **matlab** code which i have compare the theoretial uncoded ber with hamming (7,4) code
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clear
N = 10^6 ;% number of bits
Eb_N0_dB = ; % multiple Eb/N0 val

Digital communication :: 04-13-2011 21:57 :: Priya1987 :: Replies: **0** :: Views: **4665**

for i=1:2048
temp=dec2hex(i,3);
size(temp)
if(strcmp(temp,addr))
mem(i)=data;
else
mem(i)='000';
end
end
a String data is read in to addr and data and both of length 3......
but it's not working
??? In an assignment A(I) = B, the number of elements in B and
I must be

Digital Signal Processing :: 04-03-2011 06:33 :: blooz :: Replies: **1** :: Views: **1088**

hi
does anybody know how to calculate impulse sensitivity **function** (ISF) for ring,current starved ring and differential ring oscillator in **matlab**.
the formula is given in the ieee research paper "A general theory of phase noise in electrical oscillators". formula no. 38. but i dont know how to calculate the output **function** f(x). (...)

Analog Circuit Design :: 04-03-2011 04:30 :: ppat2006 :: Replies: **0** :: Views: **1050**

I want to delay a signal by 1/2 sample period in **matlab**, but the delay **function** block in simulink is all for integer delay. Does anybody know how to realize the 1/2 delay?
Thanks!

Digital Signal Processing :: 04-02-2011 00:16 :: taoly :: Replies: **1** :: Views: **1284**

I encounter a tough problem. There is a system which already shown in impulse response. But I need approach it to a transitional IIT (like ARX structure) . How do I do it in **matlab**? any direct command to do it. thanks a lot.

Digital Signal Processing :: 03-29-2011 01:53 :: taylorsu :: Replies: **0** :: Views: **937**

I am reading a text book and I wanted to use **matlab** to get the same answer as they deerived it in the text. The answer that the **matlab** displayed is not the same as the text, please this is the question, my code with result and the expected result from the text. The problem is getting the same Transfer **function** as it is. Note: Also (...)

Digital Signal Processing :: 03-27-2011 22:43 :: oshaye3 :: Replies: **0** :: Views: **756**

hi everyone ,
i am using **matlab** 2009b xilinx 12.1 with system generator
i found one error for using it
undefined **function** or method 'xlgetpath' for input arguments of type 'char'
please help me to set this ,
thankink you

ASIC Design Methodologies and Tools (Digital) :: 03-26-2011 06:31 :: kumarravi0086 :: Replies: **0** :: Views: **2737**

Digital Signal Processing :: 03-25-2011 13:59 :: cancel :: Replies: **3** :: Views: **1073**

I am designing a 3-order single loop CT Sigma Delta Modultor with RZ DAC.But how can I get the NTF? I can get the NTF of the SDM with NRZ DAC. Mainly, the transfer **function** of z-domain to s-domain can not be transered using **matlab** command d2c or d2cm.Who can tell me the method? Thanks anyway.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 03-24-2011 09:34 :: longstar :: Replies: **0** :: Views: **1004**

I need to solve a unit commitment and load flow problem using Newton Raphson method which includes a **function** which minimizes the CO2 emmissions. The size of the problem is limited to 30 busses.
I have a set of predefined **function**s one of which solves for the lowest cost. I need to modify it such that it solves for the lowest cumulative CO2 emm

Software Problems, Hints and Reviews :: 03-22-2011 15:24 :: Shan_uoit :: Replies: **0** :: Views: **1817**

hello
i use subs command in my **matlab** programm:
i want to get F in numerical mode,F obtained from integral of f1/f2 in x variable
F=int(f1/f2,x);
I defined all the parameters like f1 and f2 in **matlab** program
but when i use subs command for getting F in numerical mode :
F=subs(F)
it gives me:
80000000/53*x-2189396249847878109458682588450

Elementary Electronic Questions :: 01-27-2011 12:19 :: mina.nms :: Replies: **1** :: Views: **1583**

Dear all,
I am writing a program and I have finished the analogue part and now it is time to convert it to discreet time using appropriate transformation which is bilinear transformation. supposed I want to convert this transfer **function** below to discreet time using bilinear transformation, how can I write it.
H= 1/s^2 + 1.414s+1
p

Digital Signal Processing :: 03-18-2011 18:58 :: oshaye3 :: Replies: **0** :: Views: **1155**

hi.. im designin fir lowpass filter using fdatool... now i got the response n i generated the m file to see my specification which is shown below...
**function** Hd = fir1
%FIR1 Returns a discrete-time filter object.
%
% M-File generated by **matlab**(R) 7.3 and the Signal Processing Toolbox 6.6.
%
% Generated on: 09-Mar-2011 21:56:57
%
% Equ

Digital Signal Processing :: 03-13-2011 01:12 :: digvijay :: Replies: **0** :: Views: **1291**

Hey guys , help me to check this code.. i cant figure out how to make it run .. T.T
Its just to filter out some high frequency in the song file i cut ..
**function** filter_a()
= wavread('cut2');
N = length(song); %length of song is 99093
k=;
f1=k*fs/N;
cf = 2000 ;
n = ;
t = n/cf;
N = length(t);
f = n*cf/N;
hf = [o

Digital Signal Processing :: 03-12-2011 13:51 :: microelectronics :: Replies: **0** :: Views: **1714**

Dear all,
I am trying to arrange this transfer funcion in descending order in order to synchronize with the rest of my code. but it gives me error. look at the results with error. How can I arrange it so that the first order become last TF in the transfer **function** PLEASE SEE BELOW. ANY LOGIC THANKS. I put the code above as well
Code:
den2

Digital Signal Processing :: 03-11-2011 13:16 :: oshaye3 :: Replies: **0** :: Views: **1028**

hi
any body knows how to plot impulse senstivity **function**(isf) of 5 stage ring oscillator in **matlab**.
for eg. f=vout=sin(t) for colpitts oscillator so isf=(first derivative of f)/(first derivative square+square of double derivative of f). using his i can plot for colpitt
similarly, f= sin(t)+sin(3t)/3+sin(5t)/5+sin(7t)/7+sin(9t)/9 for

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 03-06-2011 16:26 :: ppat2006 :: Replies: **0** :: Views: **632**

Hello,
Can anybody tell me how to find an ambiguity **function** of an LFM radar pulse using fft? I am trying to form the ambiguity diagram with doppler shift and time delay in the axises. But I need to do it using FFT blocks.
Any help is appreciated!

Digital Signal Processing :: 03-05-2011 08:00 :: hoz :: Replies: **0** :: Views: **2489**

I am creating a gui in **matlab**. How to implement a high pass filter in it?
Can anyone please help me?

Elementary Electronic Questions :: 03-02-2011 07:30 :: anupama385 :: Replies: **7** :: Views: **831**

In **matlab** you need to convert the image from RGB to HSV (there is ready **function**) and then it's very simple - you just look at the Hue values are they in some range. 3 weeks ago was in the forum a discussion about detectiong face color - this is very similar to what you do

Microcontrollers :: 02-28-2011 10:36 :: luben111 :: Replies: **4** :: Views: **1032**

Hi everybody,
I have to save a **matlab** vectror 1x256 in a text file.
I'm trying with save **function**, is this the right way?
thanks

Digital Signal Processing :: 02-22-2011 09:41 :: english_style :: Replies: **1** :: Views: **1336**

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