Channel Estimation of MIMO OFDM Systems (Urgent help needed)

• Dec 13, 2007

• #1

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alisaljuk

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channel estimation in mimo

Hello All!

I urgently need a MATLAB code or any idea implementing estimation techniques on MIMO OFDM systems. I require code for any pilot estimation technique like MMSE and also for blind estimation.

Thanks in advance for any help.Really in need of some assistance quickly

 

• Feb 7, 2008

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bnut

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i think u can search in mathworks.com

there is plenty about channel estimation techniques for OFDM.

 

• Feb 28, 2008

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Fawad Elahi

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**broken link removed**
use thissites.
you will get the desired codes.
thanks

 

• Oct 27, 2009

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SHITAL_BHATT

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HI,
THIS IS SHITAL PURSUING MASTERS IN E&C
IT'S MY 2ND YEAR N I M WORKING ON ESTIMATION OF MIMO SYSTEM WITH THE HELP OF TRAINING BASED METHOD
CAN ANYONE HELP ME

 

• Dec 3, 2009

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angelosebastianelli

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

i am working on the same ,if you want we can cooperate.

 

• Jan 21, 2010

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SHITAL_BHATT

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HI
THIS IS SHITAL BHATT
CAN U TELL ME HOW MUCH HAVE U WORKED ON TRAINING BASED MIMO SYSTEM

 

• Feb 11, 2010

• #7

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angelosebastianelli

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

this is my mmse code,could some how help me?it doesn't work.

i have my pdp and its length is L.

SNR = 1/(noiseVar);
beta=1;
power_delay_profile=[power_delay_profile zeros(1,fftlen-(L))];
power_delay_profile=fft(power_delay_profile);
power_delay_profile=diag(power_delay_profile(carriers));

% Calculate frequency correlation matrix
R_hh =power_delay_profile;
R_hy = R_hh + (((beta/SNR)* eye(length(carriers))));
% Calculate LMMSE estimate
h_LMMSE = (R_hh*inv(R_hy)) * h_LS;



please help!

this is the paper i refer **broken link removed**

 

• Jan 19, 2012

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sathya14

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can anyone help me in writing code for semi-blind channel estimation for mimo-ofdm for calculating mmse value vs snr.........

 

• Feb 26, 2012

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sathya14

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plz can anyone say what is semi-blind method..and how to include that in the coding....

 

• Feb 26, 2012

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daint

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

it so useful, thanks

 

• Feb 27, 2012

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SHITAL_BHATT said:

HI
THIS IS SHITAL BHATT
CAN U TELL ME HOW MUCH HAVE U WORKED ON TRAINING BASED MIMO SYSTEM

Click to expand...

Hey can u mail me the codings u worked for mimo ofdm

 

• Apr 1, 2012

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priyana

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hi
i am working on mimo ofdm
and using mmse
for detection
bt i m not gettng a proper ber curve for simulation
]if anyone is having the code plz mail to priyanka269085@gmail.com
nee dit urgent

i need to create a channel of 8 taps
awgn or rayleigh
i hv used first rayleign bt pdb and delay values i obtained were jst able to create 1 channel
which cvalues do i nee dto use for 8 tap channel
as if same value is used all chaneels are of same value
i am working on 4*2 mimo

 

• Mar 17, 2013

• #13

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tanu.tan

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

if anybody have matlab code for blind and semi blind channel estimation in mimo ofdm sytem please send it to my id. my mail id tanu.tan@rediffmail.com.i need it urgently.

 

• Apr 2, 2014

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balram528

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

is anybody having channel estimation in mimo ofdm systems matlab code....it is very urgent...
please respond asap

- - - Updated - - -

if u have the code for mimo ofdm channel estimation please send it
Thanks in advance.....
its very urgent...

 

Last edited by a moderator: Apr 2, 2014

• Apr 9, 2014

• #15

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phongphanp

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Re: Channel Estimation of MIMO OFDM Systems (Urgent help nee

angelosebastianelli said:

this is my mmse code,could some how help me?it doesn't work.

i have my pdp and its length is L.

SNR = 1/(noiseVar);
beta=1;
power_delay_profile=[power_delay_profile zeros(1,fftlen-(L))];
power_delay_profile=fft(power_delay_profile);
power_delay_profile=diag(power_delay_profile(carriers));

% Calculate frequency correlation matrix
R_hh =power_delay_profile;
R_hy = R_hh + (((beta/SNR)* eye(length(carriers))));
% Calculate LMMSE estimate
h_LMMSE = (R_hh*inv(R_hy)) * h_LS;



please help!

this is the paper i refer **broken link removed**

Click to expand...

Matlab seem have not such a function for an ideal in programming , so you might sampling to test your system.