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361 Threads found on Correlation
MIMO antenna separation (and correlation) use a very complex mathematical description. But a good starting point is to get at least 20dB isolation at the used frequencies between antennas.
Hi, A lot of the time I am conducting power estimation and I have a TCF file for a specific HLB in a design and would like to extract the average data activity and average clock activity so that I can make correlation study between power estimation from synthesis tool and RFI/RFQ stage power estimation. Is there a w
BSIM is an empirical model, without correlation to classical device physics in many aspects (but some params are still recognizable / useful). The "design variables" you mention are not design variables, they're operating-point characteristics. I believe I've found good BSIMx.y documentation at the source, University of California at Berkeley
OFDM symbols use cyclic prefix and CP could be used to calculate the start of OFDM symbols. It's usually by correlation. I've done the simulations, but the resultant estimated OFDM starting point is not stable. They vary within a range of . I know these difference could be eliminated latter. But when I'm trying to simulate the integer f
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
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.
It’s not too clear what exactly do you want to achieve, but the most common use of image correlation is to detect a reference image pattern within another picture, much larger. This results in an image with the graphical distribution of the regions where the reference pattern is likely to resemble. The higher gradient, the most similar.
good that you figure it out. you should try EMPro in ADS. probably that will have better correlation with CST and HFSS since EMPRO is 3D and momentum 2.5D simulation.
Is there an easy way to correlate surface current density data with corresponding magnetic field data in 3D... I can easily get access to both but there is no correlation of indexes... I understand that H is used to calculate the surface current on PEC bounders but to get the H for the given current one must search entire H 3D volume and find app
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.
I am trying to understand the equations for correlating GTEM radiated emissions measurements to equivalent OATS data. I am referencing the linked paper, but there are other similar papers that can be found online. I'm having trouble making sense of the units, which makes me unsure of how to implement the equations. [URL="
actually you have attained good correlation between schematic and layout simulation already. you can try suggestion by dr volker.
Hi to all; I want to calculate the envelope correlation coefficient (ECC) for my 2x2 MIMO antenna. I have Simulated the antenna and got quite satisfactory (90%) results S11,S22, S21 or S12. Now I want to Calculate the ECC in HFSS using the S-Parameters. Is there any way to Calculate ECC in HFSS? How ECC can be plotted in HFSS? Please help me
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?
I am trying to model HFSS in order to get good agreement with the measurement results. As we know, SIwave has its own method of forcing the boundary condition to maintain the TEM mode of the pcb, and it saves a lot of times and technical issues by giving a highly accurate simulation results for pcb structure. For HFSS, it is no more easy as w
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 the correlation among thos
Is there a direct correlation between Crosstalk and EMI? If so, how does it work? I'm trying to find papers or source material that discusses this at length; with measurements/graphs but can't find any. Basically, what I want to find out is what are the physics involved between the two.
I should also mention, there is no correlation between the numbering schemes of each side, i.e., pin #20 on side A is NOT pin #20 on side B. BigDog
Could someone explain to me or direct me to a source which explains how to find the correlation coefficient at each subcarrier in a multicarrier system, such as OFDM? I know that the channel correlation matrix R_HH can be found by: R_HH = E{H.H^T} where H is the channel matrix and ^T is the matrix transpose. I presume that the channel matrix
If chokes are selected to reduce pulsed %THD and ripple then you must use pulse mode to test equivalent value at rated current to see if it meets design requirements. If you want to verify part value against Mfg specs, then it must be tested in same method using same; f, current source, DC bias. correlation between the two methods depends on