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23 Threads found on edaboard.com: **Phase Correlation**

Lets' assume an ADC exhibits its own quantization noise and **phase** noise from clock jitter on its spectrum.
In general, the quantization noise is a white noise, and the **phase** noise from a jitter shows two types of noise: close-in **phase** noise and white **phase** noise.
Here is a question, can we set an equation to represent (...)

Analog Circuit Design :: 09-03-2015 17:37 :: talking :: Replies: **1** :: Views: **805**

Power Electronics :: 06-25-2015 21:46 :: SunnySkyguy :: Replies: **5** :: Views: **3871**

hi,all
I have read the file "Predicting the **phase** Noise and Jitter of PLL-Based Frequency Synthesizers" ,which i download from this forum.
I can calculate the period jitter by the matlab code on page 46,but I do not know how to calculate **phase** jitter using matlab.
Could anyone help figure it out?
thanks any help in advance110336[/ATT

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-15-2014 17:00 :: xianweng :: Replies: **3** :: Views: **1263**

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 across 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: **657**

You could just use a digital divider, or I would think just double the PLL locked oscillator, or if you are REALLY ambitious a regenerative divider (thats a blast from the past :grin:).
I was thinking about if it could be possible, by using two reference oscillators, say nom. IF +- 100KHZ, to get the modulation side bands to cancel but not the

RF, Microwave, Antennas and Optics :: 12-05-2013 21:52 :: chuckey :: Replies: **13** :: Views: **1843**

Many Labboy done "**phase** Shift Measure Card" , Hardware be impremented .

Digital Signal Processing :: 11-29-2013 12:40 :: phongphanp :: Replies: **2** :: Views: **678**

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: **1430**

Dear all,
Suppose I have two signal time series x(t) and y(t) recorded simultaneously and sampled with the same sampling rate.
If I understand this correctly, the cross spectrum can be estimated by Fourier-transforming the cross-**correlation** function, which would be
Sxy(f) = F { E{} }
and the coherency between

Elementary Electronic Questions :: 03-20-2012 11:16 :: mocheck :: Replies: **0** :: Views: **784**

Dear all,
Suppose I have two signal time series x(t) and y(t) recorded simultaneously and sampled with the same sampling rate.
If I understand this correctly, the cross spectrum can be estimated by Fourier-transforming the cross-**correlation** function, which would be
Sxy(f) = F { E{} }
and the coherency between x(

Mathematics and Physics :: 03-20-2012 11:15 :: mocheck :: Replies: **0** :: Views: **1284**

If you multiply two harmonics of a single source, the noises of the harmonics will be-more or less- correlated, that's why this **correlation** will degredade the PN performence..If this **correlation** is one, the noises will be added and thus noise vector will be bigger-maybe two times- than single one..this is the worst case..
But if you multiply two i

RF, Microwave, Antennas and Optics :: 03-27-2011 00:02 :: BigBoss :: Replies: **3** :: Views: **1283**

I have a video which consists of the bird movements in the sky during night time and I would like to estimate the direction of the bird motion and for this purpose I am planning to implement the Motion Estimation Algorithms like Block Matching Algorithm and **phase** **correlation** Algorithm...
Is this enough or should I try implementing any other algo

Digital Signal Processing :: 02-28-2011 14:59 :: harsha_avunoori :: Replies: **0** :: Views: **892**

Sorry if I am oversimplifying the problem.
But would the relation be dependent on the combining method? As an extreme example, if your each received signal could somehow be **phase** aligned independent of the other, then the attenuation can be minimsed, whatever be the **phase** between the two.
-b

Digital communication :: 12-15-2009 16:40 :: bulx :: Replies: **2** :: Views: **2986**

Hi all.
I'm sure that if you have two independent complex signals at the receiver and you have to combine them, the larger the **phase** **correlation** between the two signal the more constructive (coherent) combining we will have.
How can i relate the **correlation** coefficient of the signal **phase** to the combiner output (...)

Mathematics and Physics :: 12-11-2009 12:27 :: BLWFSOJ :: Replies: **0** :: Views: **1323**

If the transfer function contains allpass elements and/or delay units there will be no **correlation** between gain and **phase** response.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-07-2009 09:14 :: LvW :: Replies: **1** :: Views: **1235**

Concerning the **phase** shift between 2 signals, I'm not sure, in fact, that it may be evaluated automatically without any preliminary specified information. Moreover, both signals must be sinusoidal and have the same period. Then their phasze shift delta_phi may be estimated the following way:
delta_phi = * 360 degrees,
where (del

Digital Signal Processing :: 10-01-2007 17:12 :: Dmitrij :: Replies: **2** :: Views: **3149**

I want to simulate this paper:"RST Invariant Digital Image Watermarking Based
on Log-Polar Mapping and **phase** **correlation**".but I have some question about the algorithm.could you help me please?
Link to paper :

Digital Signal Processing :: 06-26-2007 14:50 :: famot :: Replies: **3** :: Views: **1262**

Where are the above sentences from? what are you trying to do?
A minimum **phase** system (a all pass filter is normally one such) does do this to the signal. In time domain the **correlation** between the input and output may be reduces in "some" cases using an all pass filter.
BRM

Digital Signal Processing :: 12-24-2006 09:21 :: brmadhukar :: Replies: **1** :: Views: **925**

Good numbers for IQ imbalance at the receiver output are: a 0.2 dB amplitude imbalance and 1-deg. **phase** imbalance, resulting in a rejection of approximately 35dB. Rejections starting with 25dB (or better) could be corrected by the baseband processor.
Receive IQ imbalance is affecting the EVM and there is a **correlation** between EVM and SNR. Dependin

RF, Microwave, Antennas and Optics :: 09-24-2006 23:52 :: vfone :: Replies: **5** :: Views: **2547**

Dear all
In the **phase** noise measurement, there is a method called cross **correlation** that reduces **phase** detector noise and increases the accuarcy of measurement.
I want to know How is the formula of X-**correlation** obtained.
Thanks.
rf2000

RF, Microwave, Antennas and Optics :: 05-17-2006 08:06 :: rf2000 :: Replies: **3** :: Views: **1401**

very fine ...then what we can define for IC 565 .. I mean **phase** locked loop....

Elementary Electronic Questions :: 04-28-2006 11:43 :: electronics_kumar :: Replies: **4** :: Views: **1354**

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