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Dear friends,
I have a short question on Noncentral Chi-squared distribution, and I may need your help.
If X is distributed according to the noncentral chi-squared distribution , so what is distribution of cX (given that c > 0)?
I tried to find the answer on Google but I have not seen it yet...
Hi Mityan,
I think in M-PSK signal, X and Y are distributed normally with a same variance σ^2 only, the means μ1 and μ2 of X and Y, respectively, are different.
For example, if the modulated data is
data = 1 + j*0;
then
X = 1 + noise_I
Y = 0 + noise_Q
Since noise_I and noise_Q are zero-mean...
Thank you so much, Mityan.
Actually, I am thinking if the amplitude square should have the noncentral chi-squared distribution. But i am not sure. then I will post it here so that you or other friends may have any comments.
We have
X = S_I + n_I
Y = S_Q + n_Q
where n_I and n_Q are independent...
Hi all,
I just wonder if anyone can show me how to get probability distribution (or standard deviation) of square of amplitude of M-PSK signals (QPSK for example).
I think with QPSK signal, there is two components, in-phase (X) and quadrature (Y)
X = S_I + n_I
Y = S_Q + n_Q
where n_I and n_Q...
Dear all,
I would like to ask if the output of "mimochan" in Matlab is exactly the output signals right after transmitting antennas in a MIMO system? Or they are the signals on the receiver side?
The link of mimochan in Matlab is as following
**broken link removed**
I want to have output...
Hi all,
I am using the SEMCAD software to calculate SAR values for a model of a dipole and a flat phantom. The size of the dipole and the phantom as well as electrical parameters are as in IEC 62209-2. However, I could not obtain the SAR values as the reference in IEC 62209-2.
If I increase...
Hi all,
This is the first time I design a reconfigurable antenna. I plan to use PIN diodes as switching elements. Antenna operating frequency is around 4GHz. I read some papers, which used the ASI 8001 PIN diode or MBP-1035-E28 PIN diode models, but I could not find the catalog of them.
Could...
Hi all,
I read some similar topics in our forum about current distribution of an antenna in HFSS, but none of them is clear for me.
Here, I upload a simple printed dipole. I also examined J_surf of the dipole but I believe it is not current distribution (as my understanding, J_surf is only...
Dear all,
I am interesting in "Scale model measurements" issues. In my hand now is the Balanis's book called "Antenna - Theory analysis and design". It is a very famous book for every antenna engineer, I think. For the geometrical scale model in chapter 16 of this book (page 880 and 881), it...
Dear bassa,
Thank you very much for your reply. It means alot to me :D
I just wonder if someone can share their experiences during submition to IEEE? Every related experiences should be very much useful to other people :D
Thank you so much!
Hi all,
I open this topic for people to share their experiences in submitting a paper to IEEE. I am going to submit a paper to IEEE - Antenna and Propagations Society. It is my first time to submit an international paper in English, therefore, I need your helps.
I just wonder about some...
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