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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**

I'm trying to detect the start of each OFDM symbol in a continuous OFDM data flow. Each OFDM is composed of a cyclic prefix part and the data part.
One OFDM example: 6 7 8 1 2 3 4 5 6 7 8.
The data part is , the cyclic prefix is . As you can see, the first 3 samples are exactly the same as the last 3 samples.
Because

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-23-2016 08:44 :: bravoegg :: Replies: **3** :: Views: **808**

You measure the orthogonality of codes using the **cross** **correlation** metric. It's usually small but not zero. The spreading factor depends on the chip rate of the spreading codes not on the orthogonality between them.

Digital communication :: 12-16-2016 15:06 :: David83 :: Replies: **1** :: Views: **708**

Hi guys!
Theoretically there are many method of solving this problem such as **cross**-**correlation**, GCC-PHAT etc. I would like to know if anyone have any idea how to determine TDOA from digitized acoustic signals? What is the best way of implementing the process i.e. the plaform for implementation? Arduino, dsPIC, FPGA or raspberry pi? What specific

Digital Signal Processing :: 04-07-2015 15:54 :: helmi_mjd :: Replies: **0** :: Views: **1055**

Hi there I'm trying to measure time delay of one percussive event recorded by two contact mikes on a glass surface. I decided to check the **cross** **correlation** (via FFT) and detect the index of the max in the function. The method is really jittery as the medium affects the transfer function of the signal. I wonder if there is a better method than cros

Digital Signal Processing :: 01-15-2015 20:04 :: Alberto Novell :: Replies: **2** :: Views: **731**

Is it feasible?
For example, we searching signal F1, F2 and F3.
We can do **cross** **correlation** of input signal S with known F1, F2 and F3 separately.
What about finding **cross** **correlation** of S with (F1+F2+F3)?
(if we really do not want to know F index, just presence).
If it is feasible, what is the name of such technique?

Digital Signal Processing :: 07-16-2014 06:19 :: Terminator3 :: Replies: **0** :: Views: **614**

Hi All,
**cross**-**correlation** is used between two signals to see if there is a similarity between them, and do so lets say that we have noisy signals x(t) and y(t) which are received from the channel at the receiver.
By performing the **cross**-**correlation** we see that there is a peak in the plot diagram of the (...)

Digital communication :: 06-09-2014 11:40 :: engineer_eda :: Replies: **3** :: Views: **895**

I want to use **cross** **correlation** technique to obtain relative phase difference between Current & Voltage waveform of the same frequency.
I was reading following technique where U1(k) which is the discrete voltage a**cross** the piezo-transducer and I(k) is the discrete current. U2(k) is obtained by shifting U1(k) to the right by No samples t

Digital Signal Processing :: 01-28-2014 11:00 :: roxy1001 :: Replies: **1** :: Views: **659**

can anyone explain me the properities of PRBS sequence?(auto**correlation** and **cross** **correlation**)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 12-14-2013 10:59 :: abusid1170 :: Replies: **0** :: Views: **859**

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: **1078**

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: **1068**

How can I use **cross** **correlation** technique to form a robust signal/shape identifier? Primarily to detect a particular 1d shape, amidst other shapes in noise, (taking into consideration scaling factor) and that the noise distorts the shape you intend to identify. If **cross** **correlation** can't be employed then what other (...)

Digital Signal Processing :: 07-12-2013 16:37 :: elo2hot :: Replies: **0** :: Views: **748**

Need a hand with this one. 91322

Digital Signal Processing :: 05-21-2013 01:49 :: Fredrick Douglas :: Replies: **0** :: Views: **607**

Dear Experts,
I am Designing a Narrowband (30 MHz) Dual Mode Band Pass Filter. I have done the HFSS simulations inside the cavity of (30*30*30mm) with a **cross** shaped dielectric resonator. I have a also generated a lumped element model in ADS of the same filter. My Question is how can i model or correlate the input, output and mutual couplings fr

Electromagnetic Design and Simulation :: 04-24-2013 10:59 :: khabmj :: Replies: **0** :: Views: **964**

Hi;
As i read here you need to normalize vectors /sqrt(var(x)).
not sure about it, but might give you a starting point.
This may also help you:

Digital Signal Processing :: 12-22-2012 16:24 :: emresel :: Replies: **1** :: Views: **1082**

Can anyone explain to me how to extract Group delay and **cross** **correlation** of the UWB antenna in CST?
If there is a template, I would appreciate if you could send it to me.
Thank you!

Electromagnetic Design and Simulation :: 11-28-2012 17:08 :: ddfromuk :: Replies: **0** :: Views: **1281**

Dear all,
I want to know which case affect MUI in case of DS-UWB or CDMA
1- desired pulse = 1 & interference pulse = 1 & **correlation** pulse = 1
2- desired pulse = 1 & interference pulse = -1 & **correlation** pulse = 1
3- desired pulse = 1 & interference pulse = 1 & **correlation** pulse = -1
4- desired pulse = 1 & interference pulse = -1 & (...)

Digital communication :: 11-20-2012 12:38 :: kaleza :: Replies: **0** :: Views: **553**

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: **818**

A comparison of waveforms will not work. Two sounds may sound identical having very different waveforms.
Indeed, your two "a" sounds have different intonation (different fundamental frequencies) but the same intelligibility. **cross**-**correlation** between them will not be high.
Regards
Z

Digital Signal Processing :: 08-18-2012 17:05 :: zorro :: Replies: **14** :: Views: **1575**

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: **15746**

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: **4043**

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