my first ofdm

Started by seba...@gmail.com in Matlab DSP8 years ago

Hi guys this is "my first" ofdm code.could you tell me how it is and how to add the cyclic prefix? Another question is: in the function ifft...

Hi guys this is "my first" ofdm code.could you tell me how it is and how to add the cyclic prefix? Another question is: in the function ifft should i insert the IFFT SIZE? %--------1---------2---------3---------4---------5---------6---------7---------8 % OFDM Simulation clear all; close all; % % Basic OFDM system parameters % - choice of defaults or user selections % fprintf ('OFDM...


OFDM and MB-OFDM

Started by edu_forme in Matlab DSP10 years ago 1 reply

hi, can anybody of you explain to me whats the advantage of MB-OFDM over OFDM .why cannot we use frequency spectrum that is not composed of...

hi, can anybody of you explain to me whats the advantage of MB-OFDM over OFDM .why cannot we use frequency spectrum that is not composed of bands . Regards,


need very urgent help in mimo ofdm

Started by d_sa...@hotmail.com in Matlab DSP7 years ago

hello every body , I'm building a MIMO-OFDM simulator. Can I have some discussion with anyone interested in this,please? For example, I'm...

hello every body , I'm building a MIMO-OFDM simulator. Can I have some discussion with anyone interested in this,please? For example, I'm buildiing a 4-by-4 or any no of transmitters and recievers MIMO-OFDM simulator. Then, what is the best way I can verify the BER of my MIMO-OFDM simulator? I face a big problem I want to simulate mimo ofdm system so I can plot the result of bER to SNR I n...


OFDM simulation

Started by hiren_b_parmar in Matlab DSP11 years ago 1 reply

Hello friends, I am new in this group and i am happy to be a part of the group of intelligent people. I am doing my MSC in Communication...

Hello friends, I am new in this group and i am happy to be a part of the group of intelligent people. I am doing my MSC in Communication engineering in U.K. My final project is " Software simulation on OFDM in Fixed Broadband Wireless System". I just want some guidance about using MATLAB in OFDM. I just want to know what exacly i shold do to simulate OFDM means i shold make a block se...


Can any body help me about OFDM based thesis

Started by Alam in Matlab DSP9 years ago 3 replies

Dear I am studding in final year in electronics engineering, i have been making research and preparing thesis regarding with OFDM....

Dear I am studding in final year in electronics engineering, i have been making research and preparing thesis regarding with OFDM. To understand OFDM more and more, I want to simulate it with Matlab.If it is possible, could you supply me a matlab code or codes which are able to simulate OFDM or could you supply me any tutorial material that should be essential regarding my ...


Re: ofdm simulation (ifft/fft) & NoiseVar

Started by chan...@yahoo.com in Matlab DSP11 years ago

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=6957 hi.. follow this link and download the m-fil... ofdm...

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=6957 hi.. follow this link and download the m-fil... ofdm code is there... r u working in only ofdm... or u r workning on papr reduction also... thanku


MIMO-OFDM BER verification

Started by lsw0...@hotmail.com in Matlab DSP11 years ago 3 replies

Hello everyone. I'm building a MIMO-OFDM simulator. Can I have some discussion with anyone interested in this,please? For example, I'm...

Hello everyone. I'm building a MIMO-OFDM simulator. Can I have some discussion with anyone interested in this,please? For example, I'm buildiing a 4-by-4 MIMO-OFDM simulator. Then, what is the best way I can verify the BER of my MIMO-OFDM simulator? Since I use 64-PSK, I assumed that, if I adopt a Gaussian channel for MIMO-OFDM with 64-PSK, then the BER will be the same as 64-PSK in AWGN...


OFDM Transceiver

Started by mohamed hussien in Matlab DSP10 years ago

Hi I want to do a program for OFDM transceiver and add all the channel effects and measure all the OFDM parameters. Can any one help me to...

Hi I want to do a program for OFDM transceiver and add all the channel effects and measure all the OFDM parameters. Can any one help me to complete this program? Check the following program and help me to complete it. Regards clear all; close all; clc; %======================================================================== % OFDM System Parameters N = 64; % l...


Re: PAPR calculation

Started by parl...@gmail.com in Matlab DSP8 years ago

Hello Sabbir I think that has to work according to formula,it seems correct.. Did you run this program? Let me know.. and would you be able...

Hello Sabbir I think that has to work according to formula,it seems correct.. Did you run this program? Let me know.. and would you be able to tell me how do we apply this concept for OFDM? I am working on reducing PAPR in OFDM and went through the concepts and methodologies,still i am not sure how exactly to get the power values of carriers in OFDM and find PAPR. Please help me.. AND re...


OFDM simulation (without using FFT)

Started by Oluyemi Omomukuyo in Matlab DSP9 years ago

Good day everyone. I am currently doing my thesis on OFDM and my supervisor wants me to simulate continuous-time OFDM (i.e without using FFT)....

Good day everyone. I am currently doing my thesis on OFDM and my supervisor wants me to simulate continuous-time OFDM (i.e without using FFT). I've been able to simulate it using FFT but I have been unsuccessful in simulating the continuous-time OFDM. I would really appreciate it if anyone could help me out with the code. Thanks


matlab code required for ofdm

Started by dixi...@indiatimes.com in Matlab DSP10 years ago 1 reply

hi all I have work as a telecommunication engineer. I have been making research and preparing thesis regarding with OFDM and its applications...

hi all I have work as a telecommunication engineer. I have been making research and preparing thesis regarding with OFDM and its applications for my work . To understand OFDM more and more, I want to simulate it with Matlab. If it is possible, could you supply me a matlab code or codes which are able to simulate OFDM (for example matlab program which may simulate BER performance predicti...


Re: OFDM simulation

Started by alam...@yahoo.com in Matlab DSP12 years ago

Hi, I am new member. Now I am doing my M.Sc. I missed that file wich jeff gives you. Could you send me this file please. It it too much helpful to...

Hi, I am new member. Now I am doing my M.Sc. I missed that file wich jeff gives you. Could you send me this file please. It it too much helpful to me. thanks. > > > > > Dear All ; > ? > I have work as a telecommunication engineer. I have been making research and preparing thesis regarding with OFDM and its applications for my work . To understand OFDM more and more, I want


Regarding the rayleighchan( ) function in Matlab

Started by comm...@yahoo.com in Matlab DSP8 years ago

Hello, I am simulating OFDM transmission over a Fading Channel in Matlab (using the 2009a version) at my university I am concatenating 100...

Hello, I am simulating OFDM transmission over a Fading Channel in Matlab (using the 2009a version) at my university I am concatenating 100 OFDM symbols, where one symbol has 80 samples (64 subcarriers and 16 cyclic prefix). I create a Rayleigh fading channel object and filter my serial stream of OFDM symbols with the fading channel. Now, the problem is that I want each OFDM symbol be ...


Display output in Simulink OFDM demo

Started by vcteo in Matlab DSP12 years ago 2 replies

I am currently doing a simulation of OFDM in Simulink to be later used in a TI DSP. There are a few demos in Simulink which involves...

I am currently doing a simulation of OFDM in Simulink to be later used in a TI DSP. There are a few demos in Simulink which involves OFDM which i play around to familiarise with the blocks before i build my own model. There is one demo in Simulink called [b]HiperLan2[/b] which involves OFDM. What i'm trying to do now is to display the output afte


implementing rayleighchan in OFDM

Started by burkaycan in Matlab DSP10 years ago

Hi everbody, I am doing my M.SC thesis on the topic "ICI cancellation in OFDM". I have very limited time, if you can help me I will be...

Hi everbody, I am doing my M.SC thesis on the topic "ICI cancellation in OFDM". I have very limited time, if you can help me I will be grateful to you.... I can implement the OFDM structure in AWGN channel, it works very well.. But when i try to implement the system in a "rayleighchan", I obtain very bad BER results. -------------------------- N=256 ; % carriers GI=N/4; % Guar...


Implementaion of OFDM using matlab

Started by veen...@gmail.com in Matlab DSP10 years ago

Im doing a project on OFDM, the block diagram and the simulation code used is present in the following...

Im doing a project on OFDM, the block diagram and the simulation code used is present in the following path http://www.skydsp.com/publications/4thyrthesis/code.html Below are my questions regarding OFDM and also on this code. Kindly help me on this as early as possible. Im in a hurry please... 1. At the beginning of transmission, we are getting the digital signal, is the signal getting c...


Complex input to IFFT to generate real value signal

Started by vcteo in Matlab DSP12 years ago

The statement in the subject is refering to Erich Cosby's tutorial for OFDM. I'm simulating OFDM in Simulink with the aim of later...

The statement in the subject is refering to Erich Cosby's tutorial for OFDM. I'm simulating OFDM in Simulink with the aim of later converting it for a DSP. I use BPSK before the OFDM operation. With BPSK, all my binary inputs would be converted to either 1 or -1 in the IQ spectrum. In Simulink, the outputs contain very small values for the ima


simple ofdm simulation by Simulink

Started by ikis...@yahoo.com in Matlab DSP10 years ago 1 reply

hye there..i need help in doing simple ofdm in simulink. this model i refered from demo hiperlan2. the thing is, i can run the simulation with no...

hye there..i need help in doing simple ofdm in simulink. this model i refered from demo hiperlan2. the thing is, i can run the simulation with no errors warning. but in the end, my probability of error is still around 0.5 out of 1. anyone knows? here's my block sets of ofdm. http://www.4shared.com/file/44151590/4df6ea8e/simpleofdm1.html


BER for OFDM

Started by mohamed hussien in Matlab DSP10 years ago

Hi, I'm trying to get the BER for OFDM system but the result is not correct. Can any one tell me what is the wrong in my program? Regards M....

Hi, I'm trying to get the BER for OFDM system but the result is not correct. Can any one tell me what is the wrong in my program? Regards M. Hussien This is my program clear all; close all; clc; % System Parameters N = 64; % length of OFDM IFFT M = 16; % number of QAM constellation points noz = N/4+1; % number Of Zeros GI ...


OFDM

Started by Kashif Ch in Matlab DSP9 years ago

how OFDM subcarriers are converted in time domain for transmission ? ----------- Regards --------- MUHAMMAD KASHIF

how OFDM subcarriers are converted in time domain for transmission ? ----------- Regards --------- MUHAMMAD KASHIF