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## Cross Correlation Matlab |

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21 Threads found on edaboard.com: **Cross Correlation Matlab**

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: **1070**

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: **1067**

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 (...)

Digital communication :: 09-25-2012 17:32 :: xplore29 :: Replies: **0** :: Views: **818**

See what I am getting is that u dont know what **cross** **correlation** means...
When there u find the **cross** **correlation** between signals A and B, U are actually judging the how closely A and B are related.
=xcorr(A,B,maxlag);
stem(lag,corr);
what it does that with different- different lags compares A and B. and gives u the (...)

Elementary Electronic Questions :: 05-16-2011 10:49 :: Conquer27 :: Replies: **3** :: Views: **15740**

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: **4041**

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 (...)

Digital Signal Processing :: 09-23-2011 16:33 :: ganesh singadkar :: Replies: **0** :: Views: **2346**

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: **24577**

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: **3667**

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 (...)

ASIC Design Methodologies and Tools (Digital) :: 06-17-2011 09:20 :: always84 :: Replies: **0** :: Views: **2558**

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 (...)

Digital Signal Processing :: 03-26-2011 11:51 :: rsram :: Replies: **0** :: Views: **1009**

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 (...)

Digital communication :: 11-14-2010 15:11 :: MatsuriSola :: Replies: **0** :: Views: **1635**

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: **2534**

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: **3544**

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: **9712**

Hi all,
I am having a bit of a problem computing the **cross** **correlation** between two Electric-field patterns of antennas. I will try to state my problem clearly:
I have E-field values of an antenna for each value of phi and theta.
The E-field values are complex numbers and are given as dB V/m.
So in **matlab** I have a Matrix of dimensions (...)

Electromagnetic Design and Simulation :: 10-14-2007 13:46 :: bilal5836 :: Replies: **1** :: Views: **1336**

Hi all,
I am having a bit of a problem computing the **cross** **correlation** between two Electric-field patterns of antennas. I will try to state my problem clearly:
I have E-field values of an antenna for each value of phi and theta.
The E-field values are complex numbers and are given as dB V/m.
So in **matlab** I have a Matrix of dimensions (...)

RF, Microwave, Antennas and Optics :: 10-14-2007 13:42 :: bilal5836 :: Replies: **1** :: Views: **1504**

hi guy,
i have 2 channels of signals(multi frequencies, with time and voltage recorded) from 2 microphones at different locations, I would like to find out the magnitude ratio and phase different between the 2 signals. can anyone tell me the procedures for getting these? I know I need to do the fft and **cross** **correlation**, but I just don't know wha

Digital Signal Processing :: 10-01-2007 15:29 :: applejuice :: Replies: **2** :: Views: **3146**

hi all i need **matlab** auto **correlation** and **cross** **correlation** function codes ;can anybody help me please ?

Digital communication :: 02-22-2007 12:18 :: tomshack :: Replies: **6** :: Views: **5326**

Hi,
In **matlab** you can use the command "xcorr" in order to find the **correlation**. the command takes a vector or two and calculates the **correlation** and **cross** corelation.
But the problem is that the out put is a vector!!!
you have two soloutions to find the **correlation** matrix.
1- change the elements of (...)

Elementary Electronic Questions :: 12-20-2005 22:50 :: dspman :: Replies: **3** :: Views: **3033**

Hi abhi,
From **matlab** help:
XCORR(...,MAXLAG) computes the (auto/**cross**) **correlation** over the
range of lags: -MAXLAG to MAXLAG, i.e., 2*MAXLAG+1 lags.
If missing, default is MAXLAG = M-1.
Probably you are getting this message because the second argument is a scalar.
Regards
Z

Digital Signal Processing :: 11-01-2005 21:24 :: zorro :: Replies: **1** :: Views: **5189**

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