Hello all, Does anybody have a coding of Peak to Average Power Ratio reduction of ofdm in matlab. I would appreciate any ...

Hello all, Does anybody have a coding of Peak to Average Power Ratio reduction of ofdm in matlab. I would appreciate any feedback.... Thanks.

hi everyone..now i started my last year project about Rayleigh Fading using OFDM system..i have a problem when using QPSK modulation..Below is...

hi everyone..now i started my last year project about Rayleigh Fading using OFDM system..i have a problem when using QPSK modulation..Below is a my coding..anybody know how to solve this prob?? %******************* Preparation Part***************************** para=128; % Number of parallel channel to transmit fftlen=128; % FFT length noc=128; % Number of carrier ...

hi everyone, I am trying to simulate a OFDM system with AWGN channel, 4QAM symbol in matlab. Theoritically, the curve for BER should be the...

hi everyone, I am trying to simulate a OFDM system with AWGN channel, 4QAM symbol in matlab. Theoritically, the curve for BER should be the same as for BPSK BER = Q(sqrt(2*Eb/No)); But I have a problem: When I normalized the symbols 1/sqrt(2)(1+j) (For example), that doesn't work. But when I leave out the factor 1/sqrt(r), it works perfectly. Anybody knows the answer? Please help. Th...

Hello, Can anyone advice me to find the right way to calculate PAPR of multicarrier systems? I am currently working on PTS technique of OFDM....

Hello, Can anyone advice me to find the right way to calculate PAPR of multicarrier systems? I am currently working on PTS technique of OFDM. The peak average power ratio, is deifned by many in many ways. Can anyone post a nice algorithm to do this???Thank you in advance.

Is anyone know how to implement a PLL in an OFDM system using MATLAB?

Is anyone know how to implement a PLL in an OFDM system using MATLAB?

I am creating a pseudo WiMAX waveform that can be played as I/Q samples out of an arb. I've completed the framing structure and populated the...

I am creating a pseudo WiMAX waveform that can be played as I/Q samples out of an arb. I've completed the framing structure and populated the carriers with random data. I need some advice on the best way to convert a OFDM signal to the arb's faster sample rate. I have access to the Communications toolbox DSP toolbox RF toolbox I am not familiar with Simulink, so please let's j...

Hi, can anybody help me how to develop a code for the above subject? I know that scrambler is available in simulink blockset but can we extract...

Hi, can anybody help me how to develop a code for the above subject? I know that scrambler is available in simulink blockset but can we extract the code from there since I don't want to used simulink. please, really need your help, TQ. N'Na.

i want to plot the CCDf of the ofdm signal i have calculated my peak to average power as meanSquareValue = Y4'*Y4/length(Y4); peakValue =...

i want to plot the CCDf of the ofdm signal i have calculated my peak to average power as meanSquareValue = Y4'*Y4/length(Y4); peakValue = max(Y4.*conj(Y4)); where Y4 is the fft of the signal ...how should i proceed Regards

Good morning all; I've been having trouble getting my responses to people's OFDM questions posted correctly. (Operator error I'm sure :-)...

Good morning all; I've been having trouble getting my responses to people's OFDM questions posted correctly. (Operator error I'm sure :-) ) I created a simple 802.16e (WiMAX) simulation. The code is over on the Matlab File Exchange. the URL is http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do? objectId=21672&objectType=file If you search for the File ID it is ...

? Please i need? help in PSD to compare between different methods of PAPR. When apply the following code not given the same plot as in your...

? Please i need? help in PSD to compare between different methods of PAPR. When apply the following code not given the same plot as in your paper . ? My Matlab code ? N = 256;????? % length of OFDM IFFT M = 16;?????? % number of QAM constellation BW=10;??????????? % in MHz txData= randint(N,1,M); txDataMod? = qammod(txData,M); ? txDataZpadIfft = sqrt(N)*ifft(txDataMod ,N); ...

dear all ? does any body use Channel Object of matlab for ofdm signal. like chan = rayleighchan(ts,fd,tau,pdb); ## this is my case Nfft =...

dear all ? does any body use Channel Object of matlab for ofdm signal. like chan = rayleighchan(ts,fd,tau,pdb); ## this is my case Nfft = 1024; BW = 10*1e6; % Factor of correction n=28/25; % sampeling factor .see ieee 802.16e part 8.4.2.3 % Derived Parameteres 8.4.2.4 ieee 80.16 2004 Fs = floor(n*BW/8000)*8000; % Sampling frequency deltaF = Fs / Nfft; % Subcarrier spacing. Tb = 1...

Hi, I am working on an OFDM system using Matlab. The bits received at the receiver have a constant error ( i.e., avg 200 bits out of 1000 are...

Hi, I am working on an OFDM system using Matlab. The bits received at the receiver have a constant error ( i.e., avg 200 bits out of 1000 are always wrong).. when I decreased no. of bits in a symbol to let say 49 and FFT length to 64, there was no error. It looks like that there is some error in the computation of IFFT/FFT bolcks by Matlab (maybe some rounding of the data by Matlab). I am unsu...

hi friend check out this code: clc; clear all; close all; %% specification of data parameters % fft...

hi friend check out this code: clc; clear all; close all; %% specification of data parameters % fft length fftlength=256; %Modulation order M M=16; % data generation; mydata=randint(1000,1,2); %% Modulation (mapping bits to symbols) each symbol = 4 bits modulatedData=modulate(modem.pskmod('M',16,'SymbolOrder','binary','InputType','bit'),mydata); %% zero pading paddedData...

Hi, I?m currently making a simulation of LMMSE channel estimation for OFDM system using Matlab. To find the LMMSE coefficient we?d use this ...

Hi, I?m currently making a simulation of LMMSE channel estimation for OFDM system using Matlab. To find the LMMSE coefficient we?d use this equation : http://img545.imageshack.us/img545/7605/20080423599a788991f3f8b.png The main problem is I can?t find the correlation matrix (Rhh). What confused me are : 1. Some papers said t Rhh is E(H*H), with H is the channel measurement. But it?s

Hello everyone, I'm having troubles with SFO estimation and its correction on Speth algorithm, since I don't get correct estimated values...

Hello everyone, I'm having troubles with SFO estimation and its correction on Speth algorithm, since I don't get correct estimated values neither in AWGN nor in ideal case. Basically, I add SFO to OFDM signal through interpolation in time domain. Then trying to estimate with following code: temp_pilots_rx=[pos_pilot_symbols_rx_neg; 0; pos_pilot_symbols_rx_pos;]; % separate negative & positi...

Hello i am currently working on PAPR in OFDM using matlab.How do i modify the code below so that i can display PAPR for...

Hello i am currently working on PAPR in OFDM using matlab.How do i modify the code below so that i can display PAPR for totalSubcarriers=64,256,512,1024 on the same graph?This code only display totalSubcarriers=64. function paprOFDMA() dataType = 'Q-PSK'; % Modulation format. totalSubcarriers = 64; % Number of total subcarriers. numSymbols = 16; % Data block size. Fs = 5e6; % System bandwi...