**Optical OFDM**HI..
I want to model (Transmitter , channel and receiver) of optical OFDM in Matlab , can any body help me
Does matlab have features (support) to model Transmitter , channel and receiver of optical OFDM.
Waiting for your reply.
Muhammad wrote:
> HI..
> I want to model (Transmitter , channel and receiver) of optical OFDM in
> Matlab , can any body help me
> Does matlab have features (support) to model Transmitter , channel and
> receiver of optical OFDM.
Matlab does not have those kinds of features, at least not in the base
package. I do not know if it has any...

**OFDM model**Hi, i am learning about OFDM currently. And i am learning to implement
the model in SIMULINK.
Yet, i am stuck at the 'training symbols'. I dont really understand
why training is needed in channel estimation and what forms those
training symbols.
Can recommend some nice books for OFDM or simulink?
Thanks for ur patience.
On Oct 15, 12:40 pm, kelvi...@gmail.com wrote:
> Hi, i am learning about OFDM currently. And i am learning to implement
> the model in SIMULINK.
>
> Yet, i am stuck at the 'training symbols'. I dont really understand
> why training is needed ...

**matlab ofdm model**I need matlab ofdm model for research? it would be very helpful if
someone can send it to me.
Hi Yariv,
Check out this model:
<http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=3540&objectType=file>
Its a WLAN model, but it uses the OFDM model. Hope this helps.
Cheers
Alvin Tan
...

**TEQ for optical ofdm**I have recently started working on this project titled "time domain equalizer for optical ofdm" and I need to do some simulations in this area..
can any one hlep me with codes to start with , at least similar codes of time domain equalizers
Some specialists argue that <a href="http://bestfinance-blog.com/topics/credit-loans">credit loans</a> aid a lot of people to live the way they want, just because they can feel free to buy necessary stuff. Furthermore, a lot of banks present car loan for all people. Hi there, how far have you been in this equalization, ...

**WLAN modeling and OFDM**Hi guys
I've got my OFDM system up and running in MATLAB. Now I want t
parameterize it in terms of BW and T_s etc. I want to use the WLAN channe
model but I don't know how many tabs the channel length should be and wha
the gains are. Can anyone help on this?
thanks
>Hi guys
>I've got my OFDM system up and running in MATLAB. Now I want to
>parameterize it in terms of BW and T_s etc. I want to use the WLA
channel
>model but I don't know how many tabs the channel length should be an
what
>the gains are. Can anyone help on this?
>
>thanks
>
>
>
...

**OFDM and channel modeling**Hi All.
I have never worked on OFDM but still I have a doubt.
I know how to model time varying frequency selective channel for single
carrier system in *time domain*. I am pretty sure that exactly the same way
you can model the time varying frequency selective channel for OFDM.
But is it something like you can model the time varying frequency
selective channel for OFDM in *frequency domain* itself?
And if it is possible, then which would be the best way to model time
varying frequency selective channel for OFDM, time domain or frequency
domain?
Thanks
Best Regards,
Chintan
I can gues...

**Optical model recognition?**Is there such a thing? I.e. to draw models on a tablet, scan from
papers or so, and have the graphics turned to XMI. Class diagrams would
be a nice start.
Responding to Karl.wettin...
> Is there such a thing? I.e. to draw models on a tablet, scan from
> papers or so, and have the graphics turned to XMI. Class diagrams would
> be a nice start.
AFAIK, no. The problem is the market. Why would one need such a tool?
The UML repositories always come with a drawing tool, so why not draw
it in directly?
The round-trip and translation tool vendors actually have the most
plausible n...

**Help!!!!! What is wrong with my OFDM model?**I built a simulink OFDM model. It kept complaining It is a hybrid
system, actually I built a discrete model.
and I found I could not determine the delay to calculate BER.
Please help me!!!!!!
download model file from here:
<http://bbs.matwav.com/user/download/466630/project3a.mdl>
...

**Functional modeling the Optical Network**FYI:
Just released: my second book. This time explaining the
functional modeling used in describing SDH/SONET/OTN and
in fact any transport network:
"SDH/SONET Explained in Functional Models"
------------------------------------------
Subtitle: "Modeling the Optical Transport Network"
http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470091231.html
Earlier this year another book was published:
explaining Virtual concatenation, LCAS en GFP:
"Next generation SDH/SONET" - "Evolution or Revolution"
-------------------------------------------------------...

**optic flow sensor model**Hello everyone,
My research so far in using optic flow for aerial robot navigation has
been mainly experimental (see
http://www.pages.drexel.edu/~weg22/research.html if interested).
However, I want to get more involved in the theoretical aspects of it
by creating an optic flow sensor numerical model. When the same input
is fed into my model and a sensor (www.centeye.com for example), the
output should be the same. I have never developed any numerical
models before and I was just wondering if anyone out there could offer
some advice or suggestions on where to begin? Also, I would
appreciat...

**optic flow numerical model**Hello everyone,
My research so far in using optic flow for aerial robot navigation has
been mainly experimental (see
http://www.pages.drexel.edu/~weg22/research.html if interested).
However, I want to get more involved in the theoretical aspects of it
by creating an optic flow sensor numerical model. When the same input
is fed into my model and a sensor (www.centeye.com for example), the
output should be the same. I have never developed any numerical
models before and I was just wondering if anyone out there could offer
some advice or suggestions on where to begin? Also, I would
appreciat...

**RE: OFDM MATLAB Model**Hi, I am working on an OFDM MATLAB model (using Simulink)but I am
having problems with 2 issues.
1. How can I find the delay in my model between the transmitter and
the receiver output? Is there a function Matlab that can assist me
evaluate this delay?
2. How can I implement rate 2/3 and rate 3/4 codes using a rate 1/2
mother code on a convolutional encoder?
I will appreciate anyone who can give me some quick tips on this.
Rds,Kama.
...

**simulink model for optical fiber**hi,
i want to design a simulink model for an optical fiber. Can any one
help me int hat regard. how to proceed for that?
your help will be highly appreciated.
another my query is related with coupled system of nonlinear
differential equations. How to solve them in matlab. For example, in
case of Raman amplifier propagation equations for number of pump
waves and signal waves?
I am looking forward for your kind help,
regards,
shailendra
...

**OFDM matlab simulation model**download it after register.
http://www.rdfwt.com/showthread.php?t=8
...

**help! optical propagation model^_^**i want to know how to implement a optical propagation model in the
optical communication systems.
i first divided the whole fiber into several parts. every part is
divided into FFT & IFFT, and also a non-linear fuction.But i should
add some blocks into the model,and i have no idea.
would you please help me?
Thanks!
linna wrote:
>
>
> i want to know how to implement a optical propagation model in the
> optical communication systems.
> i first divided the whole fiber into several parts. every part is
> divided into FFT & IFFT, and also a non-linear fuction.But i should...

**need for ofdm transceiver simulink model**i need ofdm simulink model. m workin on my final year project and doing telecom engineering.
...

**Modeling OFDM multipath channel in Matlab**Dear all,
I have a basic question regarding modeling of a multipath channel for OFD
in Matlab and would appreciate your help.
My intention is to simulate an 802.11a transmission which uses OFDM. Fro
the 802.11a standard I know that:
-Number of Subcarriers, Nsc = 64
-Sampling Rate at the receiver, fs = 20e6 samples/sec
-BW = 20Mhz
-Carrier Frequency, fc = 5.25 Ghz
Now consider that I have the following channel impulse response:
-taps_delay = [0 10ns 20ns 30ns]
-taps_amp = [0.5 0.2 0.01 0.002]
What I want to do is to find out the channel frequency response in eac
802.11a OFDM subcarrier. Cou...

**Adding Rayleigh block to an ofdm model**Hi !
Can anyone tell me how can I add a rayleigh fading channel
to an OFDM model.
sampletime = 1
framesize = 576
even though I gave the sampletime=576 it generates an error!
input signal is a 576x1 column vector.
Thank you
regards
Pasan
Pasan Meemaduma wrote:
> Hi !
>
> Can anyone tell me how can I add a rayleigh fading channel
> to an OFDM model.
>
> sampletime = 1
> framesize = 576
>
> even though I gave the sampletime=576 it generates an error!
>
> input signal is a 576x1 column vector.
>
>
>
> Tha...

**Simulink for refractive, diffractive optics modeling**Is Mathworks planning in near future to release simulink expansion for optical systems modeling such as lens, mirrors, polarizers, splitters, different sources ...etc.?
"Alexander Brodsky" <newshurik@pisem.net> wrote in message
news:j0gv90$g0v$1@newscl01ah.mathworks.com...
> Is Mathworks planning in near future to release simulink expansion for
> optical systems modeling such as lens, mirrors, polarizers, splitters,
> different sources ...etc.?
In general, we don't comment on whether or not we will implement a feature
in the future.
But this seems like a ...

**Temperature and pressure model of optical spectra**Hello,
I'm working on a project to autocalibrate my optical spectra based on
temperature and pressure. I have a full designed experiment dataset
for temp and press on my system and can generate PLS regression models
from these spectra. I have even been able to generate PLS2 prediction
models for these data that show me how close my data fit my model.
However what I would really like is to generate a calibration for any
spectrum as long as I know the temperature and pressure. I'm not sure
how to go about doing this, it seems as if I want a function of temp
and press that g...

**OFDM matlab simulation model #2**http://www.rdfwt.com/showthread.php?t=8
?
...

**an open-source software to model optics**Dear all,
Recently, i have written some programs under Scilab/Scicos envirnment
to model and simulate adaptive optics, especieally adaptive optics.
You can find it at: https://sourceforge.net/projects/sciao/
If you can give some advice, i would be very appreciative.
Yours sincerely
chen jing-yuan
>
> If you can give some advice, i would be very appreciative.
>
> Yours sincerely
> ...

**Parallelization of Simulink model of MIMO-OFDM channel**Hi guys,
I wish to parallelize the MIMO-OFDM channel using the Simulink Model
Can you advise me how to proceed????documentation???
Thanks
...

**Problem in OFDM to Rayleigh fading model in Simulink**I am simulating a model having Rectangular QAM /16QAM ,OFDM.
constellation shown in picture below is at receiver and is acheived after inserting Rayleigh fading after some configurations
Can any one tell me how to configure the Rayleigh fading for 2.4Ghz or 5Ghz wlan simulation and how to re-acheive the constellation horizental as it was before
Even if i provide very high power i still get BER due to diagonal appearance of constellation
pic is
http://img820.imageshack.us/img820/1444/63585217.jpg
...