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## Correlation Matlab |

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68 Threads found on edaboard.com: **Correlation Matlab**

The rigorous definition of ECC involves a **correlation** of vector patterns of your antenna. The equation I think you are using in **matlab** is an approximation. That approximation is particularly bad for low efficiency antennas. I most suspect this is what is causing the discrepancy.

RF, Microwave, Antennas and Optics :: 02-24-2016 14:47 :: rrumpf :: Replies: **3** :: Views: **1080**

The "Code for Gender Recognition using Auto-**correlation** in **matlab**" was fantastic and worked perfectly for my older version of **matlab**. But once I updated to **matlab** 2015b, the code no longer worked.
Does anyone have a version of this code that works with **matlab** 2015b?

Software Problems, Hints and Reviews :: 11-28-2015 15:22 :: JBruins :: Replies: **1** :: Views: **588**

References Previous Thread:
This is another code that I have written for gender recognition in **matlab**. I have attached the files.
59385.
Can you elaborate the auto**correlation** part? What the logic?

Digital Signal Processing :: 05-02-2015 17:43 :: engrhamza :: Replies: **0** :: Views: **892**

Is it needed to convert a set of path loss values in dB to linear units like watts before they are correlated to each others in **matlab**.
For example the following gives different results:
x=rand(1,200);
y=rand(1,200);
xx=corr2(x,y)
yy=corr2((10.^(x./10)),(10.^(y./10))) % From dB to linear and then correlated
Thanks
imti

Education :: 05-10-2014 06:33 :: Imtiaz639 :: Replies: **0** :: Views: **885**

hi every body
i need distance **correlation** algorithm to compute distance **correlation** between any two vectors or if any one has **matlab** code for distance **correlation** algorithm
thanks in advance

Digital Signal Processing :: 01-21-2014 22:38 :: kareem dsp :: Replies: **0** :: Views: **448**

ok, but the question was not yet properly answered :
What do you want compare ?
( Magnitude, bandwidth, **correlation**, etc... )
+++

Digital communication :: 12-01-2013 20:49 :: andre_teprom :: Replies: **7** :: Views: **831**

hiii Sorry once again ....
I could not found function 'modnorm' and 'qammod' in the function func_ofdm_generate....... Please post your complete code then only one can run this and give you some feedback.....
Sorry for that I went to mathworks site I think these are the function from "Communications System Toolbox" ...... I don't have th

Digital Signal Processing :: 10-09-2013 14:04 :: milind.a.kulkarni :: Replies: **4** :: Views: **878**

Hello everyone,
I have a following problem:
given cross-**correlation** function {C_{12}}{\left(\tau\right)} associated with a pair of time functions {f}_{1}(t) and {f}_{2}(t):
{C_{12}}{\left(\tau\right)}={3 cos}^{2 }{\sigma}{t sin}{\sigma} {t}
if {f}_{1}(t) =\frac{ 1}{2 }+\frac{1}{4}cos {\s

Mathematics and Physics :: 07-01-2013 21:06 :: anderyza :: Replies: **1** :: Views: **869**

i am trying to find Target Range and **correlation** Gain using Sinusoidal FM signal mixed with Random Noise.
fm=1e3;
B=180kHz
fs=360kHz;
Brn=2*fm;
Ntap=1000;
xsfm=exp(j*beta*sin(2*pi*fm));
xxrn=randn(1,Nfft+2*Ntap)+j*randn(1,Nfft+2*Ntap);
ht=fir1(Ntap,Brn/fs);
nxrn1=filter(ht,1,xxrn);
xrn=nxrn1(Ntap+1+(1:Nfft));
xrn=xrn/std(xr

Digital communication :: 07-10-2013 09:28 :: icevilla :: Replies: **0** :: Views: **589**

Dear all,
I am was not convinced or may be could not understand the **correlation** in **matlab** i.e. xcorr function.
So to test I simple made two exactly similar sine wave without any delay, and it gives me delay of 21.
I cannot understand why. please first see the code below
fo=200; fs=2500;
t=0:1/fs:.008;
x=sin(2*pi*fo*t);
y=x; %n

Digital Signal Processing :: 12-10-2012 13:57 :: syedshan :: Replies: **1** :: Views: **626**

You will need an auto **correlation** filter in both directions, ignoring amplitude and phase. This can "manually" be done with an FFT and a shape comparison in the frequency domain, which is most appropriate for hardware implementation.

Digital Signal Processing :: 12-13-2012 13:57 :: fpgaengineer :: Replies: **1** :: Views: **1186**

I need to implement following expressions for the GRPE in **matlab**
lembda = inv(E*inv((A-T'*inv(R)*T))*E) *c;
g = inv(A-T'*inv(R)*T)*E*lembda
f = inv(R)*T*g
where
R:auto**correlation** of channel output
T:cross **correlation** of channel out put and input data
A:auto**correlation** of input data
i only have access to (...)

Digital communication :: 09-25-2012 17:32 :: xplore29 :: Replies: **0** :: Views: **702**

How to compare two signals using **correlation** in **matlab**. i know the function is xcorr. But xcorr returns an array of coefficients. What I want to learn is the next step in comparing them. I have no idea of how to compare them.

Elementary Electronic Questions :: 03-27-2011 09:39 :: Kashyap Cherukuri :: Replies: **3** :: Views: **14443**

i want cross corelation **matlab** code for m-seq.:-
x=;
y=;
and for gold codes:-
x=;
y=;
regrdes

Digital communication :: 05-05-2012 12:09 :: ek4m2005 :: Replies: **2** :: Views: **3713**

Hello all,
How to generate a wide band signal with given auto **correlation** in **matlab**/C/C++ from white Gaussian noise?
Regards,
Mayavi

Digital Signal Processing :: 04-27-2012 13:25 :: mayavi :: Replies: **0** :: Views: **514**

Hi guys.
I'm working on Voice Conversation project. Briefly, I have two trained data belongs two different people. With a Codec I'm trying to analyise trained data.
Now,I've trouble with this problem.
i.e X= is person K, and Y= is person L. X and Y are 2D matrices.
With the canoncorr function of **matlab** I want to a relation between two matri

Digital Signal Processing :: 03-23-2012 19:23 :: mcsech :: Replies: **1** :: Views: **704**

dear all
i ask about how i can do **correlation** between two image for same object using **matlab** depend on code not existed function
because after understanding this point i will implement it on FPGA
wait your reply
thanks

Digital Signal Processing :: 12-29-2011 07:52 :: hodahussein :: Replies: **1** :: Views: **1065**

Plz help me. I used **correlation** based method to estimate delay for GPS signal but it doesn't show correct result. I think it is because of multipath effect.

Digital Signal Processing :: 12-28-2011 08:51 :: ramza038 :: Replies: **1** :: Views: **723**

Being a fresher for DSP. Take this piece of advice. You type xcorr in **matlab** you ll know as how to code it, rather if you type "**correlation**" in wiki , you ll understand what **correlation** exactly is. With some effort it is possible to know it by your own. Learn a few stuffs , try something and let us know your difficulty we ll help for sure.

Digital Signal Processing :: 10-28-2011 09:09 :: lebesgue :: Replies: **1** :: Views: **948**

Hi
I wanted to know whether the voltage mode controller designed simple boost converter using its small signal model (in sisotool **matlab**) should work in the simulink model of boost converter( which is differential equation model) for all ranges shown stable in the open loop bode plot of compensated system.

Power Electronics :: 09-27-2011 05:56 :: sabu31 :: Replies: **0** :: Views: **814**

hi, i want to find the auto **correlation** & cross **correlation** in horizontal ,vertical & in diagonal direction of the output image obtain after doing the quantization of image*(*this image is obtain after taking the FFT of image & then finding the magnitude of that image)in to four level(quantization is done by dividing the minimum to maximum range in

Digital Signal Processing :: 09-23-2011 16:33 :: ganesh singadkar :: Replies: **0** :: Views: **2173**

can someone tell how to do the cross-**correlation** of two speech signals(each of 40,000 samples) in the **matlab** without using the inbuilt function Xcorr and how do I find **correlation** coefficient?
Please be tolerant.Thanks in advance.

Digital Signal Processing :: 09-13-2011 04:32 :: electricalpeople :: Replies: **4** :: Views: **19982**

Great code, you know your way around **matlab**. It doesn't work on my machine though. It says "could not recognize. Try speaking slowly." But I think its my mic because the time-domain plot reveals a large transient at the beginning of each recording. I am going to keep looking through it when I get more time, because I also want to find out how autoc

Digital Signal Processing :: 08-01-2011 14:27 :: trav1s :: Replies: **8** :: Views: **9784**

I have a doubt. If i have two sequences, sin(x) and cos(x) and if i compute the cross**correlation** using **matlab**, shouldn't the answer be zero?
I'm not getting it as zero.
I have no problem with cos(x) and cos(2x).
Also, one more doubt. Auto**correlation** function is maximum at 0. Why is the peak always in the middle, in the (...)

Digital Signal Processing :: 07-26-2011 17:10 :: rgamma :: Replies: **0** :: Views: **788**

download this source code
Sagar's Lab: Object tracking using corss **correlation**
---------- Post added at 20:18 ---------- Previous post was at 20:16 ----------
use **matlab** image and video acquisition tool box.
study t

PC Programming and Interfacing :: 07-11-2011 18:18 :: sagar474 :: Replies: **7** :: Views: **3263**

Software Problems, Hints and Reviews :: 06-21-2011 12:37 :: ninju :: Replies: **4** :: Views: **2377**

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. (...)

ASIC Design Methodologies and Tools (Digital) :: 06-17-2011 09:20 :: always84 :: Replies: **0** :: Views: **2281**

Here, a code wrote in **matlab** language :
Be aware that pattern matching based in **correlation** algorithm, is scale invariant.
Check if there no are restrictions in your target application to this constraint.
+++

Digital Signal Processing :: 06-09-2011 00:21 :: andre_teprom :: Replies: **1** :: Views: **681**

Hi, all
In my mini project ,in the part of **matlab** code i have to find the **correlation** coefficent of 2 row vectors.I have used that " corrcoef " instruction ,which is giving 2*2 matrics .Actually i need to compare 2 **correlation** coefficients and need to which is bigger one.Can we take

Mathematics and Physics :: 05-14-2011 03:26 :: mohammadriyaz.g :: Replies: **1** :: Views: **1170**

i've added noise to ecg signal taking specified level of snr as input
assuming original signal is clean and obtained snr after denoising using cross **correlation**
now I have to determine the snr of original data
are there any algorithms to compute snr when data alone is given?
any help algorithm or **matlab** code for this calculation is appreciated

Digital Signal Processing :: 03-26-2011 11:51 :: rsram :: Replies: **0** :: Views: **884**

Good evening,
With the aim of achieving a **correlation**, I need to create two images of size
256 * 256, which contains a letter F and serve as a target, while the other has two letters E and F showing the scene .
I'm stuck in, how to center the letter F in the middle of the image, and how, after **correlation**, display the result in peak shape.

Digital Signal Processing :: 03-23-2011 19:09 :: nomadstorm :: Replies: **0** :: Views: **821**

Hi there,
Has any one got information about how to carry out **correlation** in **matlab** using for loops ?

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-14-2010 11:15 :: siddhesh19 :: Replies: **2** :: Views: **546**

hi every1... m new for **matlab** n i need code so can any one pls help me write **correlation** code in **matlab**..

Software Problems, Hints and Reviews :: 11-17-2010 06:51 :: meghabadad :: Replies: **0** :: Views: **823**

Currently I want to make a **matlab** simulation of LMMSE channel estimation method in OFDM systems.
In LMMSE method (Wiener Filtering) to find the channel estimation we have to find coefficient :
c=(Rxx^-1)*Rxy
where Rxx is auto**correlation** matrix and Rxy is cross-**correlation** matrix.
What I want to ask is how to find these Rxx and

Digital communication :: 11-14-2010 15:11 :: MatsuriSola :: Replies: **0** :: Views: **1473**

need more details, how do you compare, by **correlation** algorithm with scalar result or vector result or someother method

Digital Signal Processing :: 10-17-2010 11:06 :: Communications_Engineer :: Replies: **2** :: Views: **1560**

Use the cross **correlation** command in **matlab** i-e
xcorr(y,z).
The peak will indicate the presence of signal of interest in that signal.

Digital Signal Processing :: 07-07-2010 07:33 :: MHanif :: Replies: **1** :: Views: **2398**

rake would be too complex. besides it would require transmitting of some additional good auto-**correlation** sequence in the beginning of the transmitted signals to enable the fingers to work.
My suggestion is this,
y = h*a + n (* for conv)
pr y = h x a + n
i.e. a = y/h + n/h
where a is the recovered info

Digital communication :: 04-23-2010 09:47 :: Communications_Engineer :: Replies: **2** :: Views: **6247**

Hello dears,
I want to match a test image with the template image in **matlab**, For this task i am using normxcorr2 function for **correlation**, this function returns an array of **correlation** between template and test image.
This function works fine when template image is a part or sub image of test image. But this function dose not give me (...)

EDA Jobs :: 04-19-2010 04:19 :: Naveed Ahmed :: Replies: **0** :: Views: **922**

Hello
I m trying to estimate time delay between signals using cross **correlation**s.
Unfortunately I ve encountered a few problems I m unable to handle.
Here is code what I ve done. According to article I ve read it is supposed to be working.
I m expecting at the last figure, one peak which should indicate a delay between signals x1, and xr, but

Digital Signal Processing :: 04-10-2010 23:29 :: syrioosh :: Replies: **0** :: Views: **3358**

Hi I need to extract the 2nd harmonic from a waveform. I think I need to use **correlation** but I have no idea where to start. Can anyone provide some **matlab** help.
The experiment is to fire a chirp signal at a bubble and measure the response from the bubble to see if it resonates. I have a hydrophone to collect the received data.
I've got the da

EDA Jobs :: 03-27-2010 19:40 :: nau06116 :: Replies: **0** :: Views: **1115**

i am doing a project on image wwater markin usin threshod based **correlation**. since i am a beginner in this field ineed help.. i need source code for visible water marking .please help.

Digital Signal Processing :: 03-02-2010 07:30 :: adulpankaj :: Replies: **0** :: Views: **871**

Hi,
I'm doing my final year project about blind equalizer based on kernel methods(I'm beginner with **matlab**).I have implement this code based on this research "Generalized **correlation** Function: Definition,Properties, and Application to Blind equalization".you can find it online
i dont know exactly how to implement gaussian kernel and the

Digital Signal Processing :: 02-12-2010 13:04 :: radicalfunction :: Replies: **0** :: Views: **880**

this is my mmse code,could some how help me?it doesn't work.
i have my pdp and its length is L.
SNR = 1/(noiseVar);
beta=1;
power_delay_profile=;
power_delay_profile=fft(power_delay_profile);
power_delay_profile=diag(power_delay_profile(carriers));
% Calculate frequency **correlation** matrix
R_hh

Digital communication :: 02-11-2010 11:02 :: angelosebastianelli :: Replies: **2** :: Views: **5334**

I generate random data sequence and represent it in different codes.
NRZ, RZ , Manchester, and Miller now I want to get their spectrum. I think I have to find the auto **correlation** then the inverse Fourier transform. I wonder How to do that.
If there is a method to use these **matlab** codes in the simulink?

Digital communication :: 01-13-2010 18:43 :: alawsh21 :: Replies: **0** :: Views: **1440**

Hi,
I've done the **correlation** of the noise power of a 3rd order modulator. Its block diagram is shown below.
I've two results to be compared:
1. Using closed-form formula and do integration.
2. Using verilog-HDL model and post process data in **matlab** to obtain the noise power.
The results are respectively 0.47 and 0.5037.
I would l

Digital Signal Processing :: 01-10-2010 04:26 :: neoflash :: Replies: **1** :: Views: **937**

Hi,
Template is the pattern you want to find in the image. For example if you are looking for circles in an image, a smaller image containing only a circle is the template. Once you calculate the cross-**correlation** between a template T and an image I, you obtain an image X.
The location of the pixel with the highest value in X will give you t

Digital Signal Processing :: 12-13-2009 12:08 :: s_cihan_tek :: Replies: **2** :: Views: **9472**

Please help guys.. i need to perform the run and **correlation** property on a stream of bits that has been pseudorandomly generated.
I have used the following piece of code: e.g x= randn(10,1)>0.5 to generate random bits of 0's and 1's. Is this the correct way of doing it or do i need to pass through the linear feedback shift register method to ge

Digital communication :: 12-10-2009 15:33 :: dammadmin :: Replies: **0** :: Views: **1086**

Hi all,
Ive got a question, how to implement the MIMO channel if I have a TDL (CIR of the multipath channel) and i have **correlation** matrices of terminal and BS. So the spatial **correlation** matrix is kron(R_bs, R_term). So I have the output signals from both or more antennas, i have the multipath channel impulse response and the spatial (...)

Digital communication :: 07-08-2009 15:29 :: stewlik :: Replies: **0** :: Views: **2007**

Hi people
I have a question about MIMO **matlab** code.
I'm making my thesis about MIMO channels, in a brief I take a SISO transmission and only with the SNR I should tell you how good will be this transmission if we use MIMO instead of SISO.
I also wrote a channel generator with only the matrix **correlation** factor desired and number of antenas

Digital communication :: 06-22-2009 16:58 :: lastminuteproject :: Replies: **1** :: Views: **1484**

write a **matlab** program for a cw rader with the following data:
carrier frequncy 400 MHZ,,,cw duration 1ms,,simulated speed 100km/h,,,sampling freaquncy 1GHZ,,,the rader estimates the target velocity if the **correlation** output exceecs 70%
any one can help me plzzzzzzzzzzz
as soon as he can

Elementary Electronic Questions :: 04-25-2009 07:46 :: goodtime :: Replies: **0** :: Views: **922**

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