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## Cross Correlation |

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cross correlation matlab , correlation , correlation matlab , phase correlation

76 Threads found on edaboard.com: **Cross Correlation**

In a processing before receiver block
Through the processing in this block we add the signals of the transmitted one, so the noise is also added; I would like to compute the new standard deviation σ of the signal.
In order to get σ , I cut the path of the TX RX by "Gaussian noise Generator" with variance 1 and mean is 0 and I use the

Digital communication :: 11-03-2010 16:58 :: ReComm :: Replies: **2** :: Views: **1576**

how can we write a code to find **cross**-**correlation** or auto **cross**-**correlation** in verilog? actually we are trying to find the delay between a pulse and its echo. we have the signal coming from an 8-bit ADC and we keep it in a RAM. then we need to find the max value of the **correlation** to determine the delay (...)

PLD, SPLD, GAL, CPLD, FPGA Design :: 09-27-2010 18:22 :: keremcant :: Replies: **2** :: Views: **5242**

Did you try **cross**-**correlation**?

Digital Signal Processing :: 08-11-2010 06:50 :: FvM :: Replies: **4** :: Views: **1952**

Hi All,
I'm trying to find the movement between two different image for images' registration.
In order to speed-up things, I'm trying to find the maximum of the **cross**-**correlation** of the two images.
I'm using OpenCV - the cvDFT() to generate the two Fourier transforms and than, using the cvMulSpectrums() to obtaining the **cross**-corre

Digital Signal Processing :: 08-01-2010 09:23 :: stam :: Replies: **0** :: Views: **2883**

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: **3546**

Digital communication :: 01-31-2010 12:06 :: Communications_Engineer :: Replies: **4** :: Views: **5627**

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: **9713**

Hi!
I have been working on EDK for some weeks now . Now i have been given a simulink based object tracking model , how can i map this **cross**-**correlation** based algorithm on virtex series FPGA. Do i need to redesign the algo with Xilinx blocks and MCode in simulink and use system generator to wrap them and integrate it into main design or there is

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-13-2009 07:32 :: munis :: Replies: **1** :: Views: **1056**

Auto corr and **cross** have the same difference regardless of where you apply them

Digital communication :: 05-27-2009 09:10 :: Communications_Engineer :: Replies: **2** :: Views: **2099**

hello,
i have rf unit connected to DIGITAL MCU.
the rf tranceiver gives RX_DATA after fsk demodulation,
i need to implement a correlator in the mcu.
what does it mean to impelement a correlator ?
and what is a peak **correlation** ?
(i know what is **cross**/auto **correlation**)
i think i need to count errors in the preamble
and by that (...)

Digital communication :: 01-11-2009 19:56 :: bmwcoupe :: Replies: **0** :: Views: **808**

Can somebody explain to me what GCC (Generalized **cross** **correlation**) is? How does it differ from regular **cross** **correlation**?
Thanks.

Digital Signal Processing :: 06-04-2008 00:22 :: illucius :: Replies: **0** :: Views: **1629**

Ideally, random sequences should have a infinite length. But Pseudo-Random (PN) sequences are finite length sequences with semi-randomness in the elements in sequences. Some examples are M (or maximal length)-sequence, Gold sequence. They show good but not ideal **correlation** properties, i.e., auto-**correlation** for non-zero shifts and (...)

Digital communication :: 05-19-2008 13:10 :: nalino :: Replies: **6** :: Views: **4174**

Decoupling two antennas can lead to improve the antenna system performance. But sometimes decoupling is not enough and you also need to decorrelate the antennas: high C11 (auto**correlation**) and low C12 (**cross**-**correlation**). C11 is somehow the radiation efficiency, and C12 is the energy radiated from one antenna but coming from the other (...)

Electromagnetic Design and Simulation :: 04-07-2008 14:16 :: perejferrer :: Replies: **19** :: Views: **2656**

Hello,
What is the applications of **cross** **correlation** and Auto correalation?
Regards,
N.Muralidhara
it is used in receriver desin

Elementary Electronic Questions :: 02-11-2008 08:00 :: sundarmeenakshi :: Replies: **8** :: Views: **1409**

you can use a comparator to detect whether the signals are similar are not ....
**cross**-**correlation** is another technique in DSP for detecting the similarities in the signals.

Microcontrollers :: 11-06-2007 08:26 :: abaidullah :: Replies: **1** :: Views: **1019**

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 181(0-

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 181(0-

RF, Microwave, Antennas and Optics :: 10-14-2007 13:42 :: bilal5836 :: Replies: **1** :: Views: **1505**

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: **3149**

Do you think it is possible to estimate the delay between two sinusoidal signals by using **cross** **correlation** calculation and implementing with a micro-controller (e.g. ATmega)?
Is there any good idea?

Digital Signal Processing :: 04-25-2007 12:55 :: camp_mas09 :: Replies: **1** :: Views: **1659**

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