Can we use directly the FFT and IFFT functions in Matlab for OFDM simulation? I found IFFT(AWGN) will result in strange mean and variance. ...

Can we use directly the FFT and IFFT functions in Matlab for OFDM simulation? I found IFFT(AWGN) will result in strange mean and variance.

Dear all, I have some problems regarding the simulation of OFDM Chain to obtain the BER curve...Pls help me ..it is very urgent. Great...

Dear all, I have some problems regarding the simulation of OFDM Chain to obtain the BER curve...Pls help me ..it is very urgent. Great helps are appreciated. 1). Noise Variance & Zero Padding...- in my understanding , we have to normalize the tranmited bits not the symbol when plotting the BER vs EbNo curve. Is that right?. After qpsk modulation .

Q1: This is with reference to the white paper by TI entitled, "Power Line Modem with E-meter Platform", 2004 (i'm sorry i can't find the...

Q1: This is with reference to the white paper by TI entitled, "Power Line Modem with E-meter Platform", 2004 (i'm sorry i can't find the link to the article) At the part where the paper decribes the Packet Format for the OFDM frames. It says that the data frames are grouped into blocks of 3 frames and each data frame in the block contains i

Dear All!! I have a project going related to PAPR of OFDM systems.Can any one help me with codes to calculate PAPR? Thanks in...

Dear All!! I have a project going related to PAPR of OFDM systems.Can any one help me with codes to calculate PAPR? Thanks in Advance. Sabbir __________________________________________________ "> http://mail.yahoo.com

hi friends i am doing a project about an Othogonal Frequency Division Multiplexing(OFDM) transmission scheme. any body tell me how i can input...

hi friends i am doing a project about an Othogonal Frequency Division Multiplexing(OFDM) transmission scheme. any body tell me how i can input alphanumeric text or audio files into matlab(eg simulink). also send me some OFDM code if you have it. expecting earliest reply thanx. peter

Hi, i am trying to simulate an OFDM transmission system in matlab. AWGN noise can be modelled as a normal distribution using the randn...

Hi, i am trying to simulate an OFDM transmission system in matlab. AWGN noise can be modelled as a normal distribution using the randn function. But can anyone guide me how to model ISI and ICI noise in my simulation. if anyone has a code for this or can help me in this regard, please reply. jawad

Dear All, I would highly appreciate if you share your thoughts on the correctness of the method for calculating PAPR value of OFDM signal as...

Dear All, I would highly appreciate if you share your thoughts on the correctness of the method for calculating PAPR value of OFDM signal as described below. I am using NRZ random bits as the random input data where the n point IFFT outputs are x1,x2..xn(complex values) for one OFDM symbol. peakpower=max(abs(x1).^2,abs(x2).^2,..abs(xn).^2) avgpower=sum((abs(x1).^2,abs(x2).^2..abs(xn).^2)/n

Hi All, I'm simulating rayleigh fading on an OFDM system. I have a question with regards to the usage of the rayleighchan function....

Hi All, I'm simulating rayleigh fading on an OFDM system. I have a question with regards to the usage of the rayleighchan function. I'm trying to figure out how to do perfect compensation for the fading using this function. In theory, I could use an equalizer, but I would like to do perfect compensation for my theoretical purposes and to keep

I want to use the multipath rayleigh channel for my OFDM simulation in Simulink. However i keep getting this error message: Error reported...

I want to use the multipath rayleigh channel for my OFDM simulation in Simulink. However i keep getting this error message: Error reported by S-function 'scomtrigbuff2' in 'ofdm/Multipath Rayleigh Fading Channel/Multipath Fading Channel/Fading Profile/Rebuffer with Input Trigger/S-Function': The minimum input width must an integer scalar > 0 I'm new to Simulink so can anyone help me

Hello, Diana Knight. Hope you read this mail. You are looking for an OFDM simulation using Matlab. Jeff Winter had given you a file. I known...

Hello, Diana Knight. Hope you read this mail. You are looking for an OFDM simulation using Matlab. Jeff Winter had given you a file. I known this by searching past message in dsprelated. I am doing my M.Sc on Telecommunicaions. Could you please send me this file. It would be very helpful to me and for my study. Bye.

Hi, I am simulating OFDM.I finished some part of it.I passed it both awgn=20 and multipath fading channel.Now =FD will make chammel estimation...

Hi, I am simulating OFDM.I finished some part of it.I passed it both awgn=20 and multipath fading channel.Now =FD will make chammel estimation by=20 using pilot symbols.But =FD don't have an idea for doing this.For=20 example I will put 4 pilot symbols as H=DDPERLAN/2 for every OFDM=20 symbols.If you know can you give me an idea.Thanks from now... =20

Hello Friends, My name is paulami and i am working as a communication engineer in U.S. Recently I have a project based on OFDM simulation...

Hello Friends, My name is paulami and i am working as a communication engineer in U.S. Recently I have a project based on OFDM simulation in MATLAB. As this software is new for me, I am unable to simulate it. Can anyone send me the simulation code plotting the spectrum or any model designed by communication blockset. It will be a great help to me. Thank you, Best regards. ...

I have a simple question about calculating the PAPR in matlab. I am doing an OFDM simulation where I have say N data points and then I do the IFFT...

I have a simple question about calculating the PAPR in matlab. I am doing an OFDM simulation where I have say N data points and then I do the IFFT on these N data points with 4 times oversampling. Now when I calculate the Peak to Average Power Ratio I get a very small number so what I'm trying to figure out is what number I should multiply it by to get it scaled correctly. Is it 4*N? or am I missi...

Hi All I'm doing my Master Thesis about "Multiuser Detection and Channel Estimation in MIMO OFDM using ICA". I use FastICA algorithm for...

Hi All I'm doing my Master Thesis about "Multiuser Detection and Channel Estimation in MIMO OFDM using ICA". I use FastICA algorithm for complex valued signals by Ella Bingham and Aapo Hyv?rinen (paper about this algorithm is in "A fast fixed-point algorithm for independent component analysis of complex valued signals", International Journal of Neural Systems, Vol. 10, No. 1 (February, 2000)...

I am doing a project related to OFDM. My doubt is whether the no of subcarriers and the IFFT size should be equal or not?

I am doing a project related to OFDM. My doubt is whether the no of subcarriers and the IFFT size should be equal or not?

Dear all, I am David Lee and as a new member to this group I send my regards to everyone. I will be very grateful if anyone could help to...

Dear all, I am David Lee and as a new member to this group I send my regards to everyone. I will be very grateful if anyone could help to model multipath fading for the IEEE 802.11a OFDM standard and also tell me which channel estimation technique to use for that standard. So far I know that given the impulse response of a multi-path fading channel we can represent it as a vector for e.g ...

I want to use the multipath rayleigh channel for my OFDM simulation in Simulink. However i keep getting this error message: Error reported...

I want to use the multipath rayleigh channel for my OFDM simulation in Simulink. However i keep getting this error message: Error reported by S-function 'scomtrigbuff2' in 'ofdm/Multipath Rayleigh Fading Channel/Multipath Fading Channel/Fading Profile/Rebuffer with Input Trigger/S-Function': The minimum input width must an integer scalar > 0 > > > Although i added a buffer block to the

Hello Everyone! I am Ahsan and i am doing my final year (UG) project on OFDM. I was supposed to simulate the effects of noise and...

Hello Everyone! I am Ahsan and i am doing my final year (UG) project on OFDM. I was supposed to simulate the effects of noise and multipath fading on OFDM signal. I am using SIMULINK as the simulation tool.I have completed the noise simulation using the AWGN channel in SIMULINK but when i insert the Multi-path Rayleigh Fading Channel in my model i get the following error: Error rep...

Hi all, nice to have subscribed in this site. But for the moment I got 1 problem , the synchronisation algorithm,or the Maximum...

Hi all, nice to have subscribed in this site. But for the moment I got 1 problem , the synchronisation algorithm,or the Maximum Likelihood estimation of time and frequency offset in OFDM systems with the algoithm of "Jan Jaap van de beek, Magnus Sandell, and per Ola Borjesson", in MATLAB (6.5, or 7(R2006a)).Here is the code, that I have written but for the first time has worked, but not now,...

I am really glad to be a part of this group and i am sure that there is some one out there who would help me in this problem of mine. I need...

I am really glad to be a part of this group and i am sure that there is some one out there who would help me in this problem of mine. I need to find ways to plot a curve of BER in matlab. A rayleigh faded environment using OFDM technique. Could some one please post a matlab file or a link to such a file which could help me. Thanx Shabab p.s. i have looked for such files in mathw...