Rank: 92 based on 573 downloads (last 30 days) and 9 files submitted
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Hamid Ramezani

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TU DELFT

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PhD student, electrical engineering, circuit and system group

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Files Posted by Hamid View all
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13 Dec 2012 Screenshot OFDM Sparse Channel estimation BER performance of LSE and sparse channel estimation for OFDM system. Author: Hamid Ramezani ofdm, sparsity, channel estimation, ber, compressive sensing 102 1
  • 5.0
5.0 | 1 rating
09 Dec 2011 Screenshot Single target Localization distance based localization of a single target Author: Hamid Ramezani communications, optimization, signal processing, measurement, automotive 20 0
08 Dec 2011 Screenshot Capacity Maximization in Multiuser OFDMA system The complete project of OFDMA system. It tries to maximize the network capacity. Author: Hamid Ramezani ofdm, capacity, channel, pilot, power allocation 53 1
10 Apr 2008 Screenshot Alamouti STC for MIMO System Alamouti Space Timem Coding Author: Hamid Ramezani aamouti, mimo, timem, multi antenna, m, stc 34 5
  • 3.75
3.8 | 4 ratings
24 Mar 2008 Screenshot greedy algorithm in OFDM resource allocation (single user) the implemention of greedy algorithm in mex file Author: Hamid Ramezani greedy algorithm, mex file, resorce allocation, ofdm, optimization, wireless 38 5
  • 5.0
5.0 | 1 rating
Comments and Ratings by Hamid View all
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18 Mar 2013 greedy algorithm in OFDM resource allocation (single user) the implemention of greedy algorithm in mex file Author: Hamid Ramezani

For those who are working with MATLAB on a 64 bit operating system, please build a 64 mex function for the c code inside the zip folder.

The instruction is as follow:

1. mex -setup (choose the appropriate compiler)
2. mex greedyAlgSingleUser.c (building mex function)

Hamid Ramezani.
06 Mar 2013 Capacity Maximization in Multiuser OFDMA system The complete project of OFDMA system. It tries to maximize the network capacity. Author: Hamid Ramezani

For the pdf file please go to this web address:

http://ens.ewi.tudelft.nl/~ramezani/Pdf_Files/eratta.pdf
08 Dec 2011 OFDM LSE Channel Estimation the performance of LSE channel estimation will be evaluated based on bit error rate in received data Author: Hamid Ramezani

Dear Aydar,

Thanks, and it is funny that you waited two years, I am really sorry for that. :) you know sometimes the life does not go as you expect.

08 Dec 2011 OFDM LSE Channel Estimation the performance of LSE channel estimation will be evaluated based on bit error rate in received data Author: Hamid Ramezani

Dear Aydar,

If we want to evaluate the performance of BER without any power limit on the transmitter, and we only consider the SNR on the data, (not pilots) then your right. Regarding your comment I recently submitted a project here, which will be published soon. There, we can see how the power allocation among pilots and data affects the total capacity of the network. I hope it would be helpful for the people who are interested in this field of study.

Hamid.

07 Dec 2011 OFDM LSE Channel Estimation the performance of LSE channel estimation will be evaluated based on bit error rate in received data Author: Hamid Ramezani

To Aydar Zimaliev,
Thanks for your comment. In practical scenarios in which the power is an important resource of the system, we should consider the overall performance of the systems. And as you know, the transmit power limit put a condition on the overall transmission power and it is not different for pilots or data. For the optimum power allocation between pilots and data please see the following paper: "On the Power Allocation and System capacity of OFDM Systems Using Superimposed Training Schemes".

However, if we consider the power allocation of pilots and data disjointly, then you'r right.

Hamid.
Comments and Ratings on Hamid's Files View all
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18 Mar 2013 greedy algorithm in OFDM resource allocation (single user) the implemention of greedy algorithm in mex file Author: Hamid Ramezani Ramezani, Hamid

For those who are working with MATLAB on a 64 bit operating system, please build a 64 mex function for the c code inside the zip folder.

The instruction is as follow:

1. mex -setup (choose the appropriate compiler)
2. mex greedyAlgSingleUser.c (building mex function)

Hamid Ramezani.
06 Mar 2013 Capacity Maximization in Multiuser OFDMA system The complete project of OFDMA system. It tries to maximize the network capacity. Author: Hamid Ramezani Ramezani, Hamid

For the pdf file please go to this web address:

http://ens.ewi.tudelft.nl/~ramezani/Pdf_Files/eratta.pdf
23 Jan 2013 MIMO Rayleigh fading Channel Capacity maximum capacity of a mimo channel is considered here. Author: Hamid Ramezani Telecom Bretagne

Very useful code. Thank you! But one little problem is that random is not provided, and when replaced by 1/sqrt(2) * abs(randn(nr,nt) + j*randn(nr,nt) ), the figure obtained is not similar to the one expected. The capacity is linear! Can someone please tell me how to fix this? thanks in advance!!
22 Dec 2012 OFDM Sparse Channel estimation BER performance of LSE and sparse channel estimation for OFDM system. Author: Hamid Ramezani chen

I have learned a lot frome your file. Adding more flexibility to the channel generation will make your code perfect.

04 Nov 2012 Alamouti STC for MIMO System Alamouti Space Timem Coding Author: Hamid Ramezani mukhald

thanxxxxxxx
Top Tags Applied by Hamid
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ofdm, wireless, capacity, ber, channel estimation
Files Tagged by Hamid View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
13 Dec 2012 Screenshot OFDM Sparse Channel estimation BER performance of LSE and sparse channel estimation for OFDM system. Author: Hamid Ramezani ofdm, sparsity, channel estimation, ber, compressive sensing 102 1
  • 5.0
5.0 | 1 rating
09 Dec 2011 Screenshot Single target Localization distance based localization of a single target Author: Hamid Ramezani communications, optimization, signal processing, measurement, automotive 20 0
08 Dec 2011 Screenshot Capacity Maximization in Multiuser OFDMA system The complete project of OFDMA system. It tries to maximize the network capacity. Author: Hamid Ramezani ofdm, capacity, channel, pilot, power allocation 53 1
10 Apr 2008 Screenshot Alamouti STC for MIMO System Alamouti Space Timem Coding Author: Hamid Ramezani aamouti, mimo, timem, multi antenna, m, stc 34 5
  • 3.75
3.8 | 4 ratings
24 Mar 2008 Screenshot greedy algorithm in OFDM resource allocation (single user) the implemention of greedy algorithm in mex file Author: Hamid Ramezani greedy algorithm, mex file, resorce allocation, ofdm, optimization, wireless 38 5
  • 5.0
5.0 | 1 rating

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