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21 Threads found on edaboard.com: Ber For Psk
How will u prove that ber for msb bit is less than ber for lsb bits in mqam....
hi can anybody sen me a program for psk modulation over frequencey selective channel........plzzzzzz thank u vey much in advance clear all; clc; %% M=2; % size of signal constellation k= log2(M); % bits per symbol n= 1000000;
Hi, I'm trying to calculate the theoretical ber for M-ary psk in the presence of a Rayleigh Channel. I've been using as a reference on how to do it but I haven't made much progress. In this example he says the ber for Bpsk is the integral of 0.5erfc(sqrt(y))p(y) from 0 to infi
I AM IMPLEMENTING THE PAPER A SIMPLE TRANSMIT DIVERSTY TECHINIQUE for WIRELESS COMMUNICATION BY SIAVISH M ALAMOUTI IN MATLAB. THE PROBLEM IA FACING IS THAT I AM USING psk AND QAM MODULATION THE CODE WORKS WELL WITH psk MODULATION BUT WHEN IT IS UP TO QAM IT DOESNT GIVE ME CORRECT ber for M>4 I AM USING (...)
hi. i'm new in this. i have a noise generator module (frequency variation from 2kHz to 16 KHz )and psk module (bandwidth of 10KHz) . Now by using this i want to plot hte Eb/No Vs ber curve pls any one hlep me . you work with matlab code or with simulink?
Hi electronics_kumar: for radio sistems narrow band (12,5 or 25 Khz) -ASK. Simple and cheap (ususally AM systems) -FFSK. Reliable and very good ber. -psk has a higher speed but perhaps is more dificult adjustment if you are using links betwen your diferent stations. I hope this helps a bit.
I am doing a project in convolutional coding and i have to write a program about modulation with AWGN channel or noise, doesnt mater. I have this program which doesn't give me good ber. i am confused and dont know how to di it. after i finish this i have to apply convolutional coding and observe the change in ber. here is the program: (the program
Hello, I am trying to plot the ber of Bpsk, but it does not work correctly, I do not know why. I am using the following code: M=2; chan=rayleighchan(1/10000,100); tx=randint(50000,1,M); txSig=pskmod(tx,M); y=filter(chan,txSig); SNR=0:2:20; for n=1:length(SNR) rxSig=awgn(y,SNR(n)); (...)
Hi friends, i have question related on the ber and E0/N0 computation. in fact, i worked on a Qpsk modulation with a ber of 4.10^-2 and E0/N0 of 6.07 dB. Now, i want to take the interest on varying the modulation scheme (4QAM, 16 QAM, 256QAM). what should i do to acquire values of ber and E0/N0 for each (...)
mr abuddallah you missing alot of concepts of doing the OFDM modualtion fft alone wont get you ofdm modualtion, first you have to convert the data from D/A after ifft then up-convert it and transfer it to passband it(if necessary) and to plot the ber u need to define AWGN for multipoints not only 1 point like u doing hope this will help you r
hi psk ber calculation pe=1/2*erfc(sqrt(Eb/No)) Eb/No = 5 db for this how to calculate the ber . help me
MSK is the general term for having several levels of whatever is being modulated, amplitude, frequency, or phase. Mpsk is the more specific term for several phase states that can be gone to. They are generally a power of two 2, 4, and 8 being the most common. After 8 the states get so close together that the SNR required (...)
Mod/Demod schemes can also be decided based on the following criterions as there should be a balance in the whole channel design. Considering a practical channel (6Mhz BW and ~15db noise), if u use QAM and a complex FEC algorithm ur channel will bang up against the Shannon's limit theorem, but if ur using psk ur ber will comparatively increase but
i have attached a m-file (in the form of txt file) from my previous post graduate assignment which requires me to simulate a bpsk transmission using baseband envelope approach; using either rectangle, sync or raised cosine pulse shaping through a AWGN or Rayleigh flat fading channel. i have also wrote the commands to plot the ber vs snr (...)
Hi Different Modulations have different ber in fixed SNR and different bit rate
8 psk is a M-ary psk modulation in which bits are taken three by three how do I implement this modulation in MATLAB? Hi there!! There was already an opened topic about this: I don't know if there is more.. you can do a search of the forum. But for solving your probl
I am working on a project which is about MIMO quantized channel simulation. It expected to get result that existing a strategy to encode the observations at a fixed rate Q bits per observation and get a linear growth of the mutual information for the result M by M quantized MIMO channel. for this MIMO channel, I should prove that the (...)
I think you are confusing different issues. Base Band is the data/information to send, it is not conditioned for wireless transmission. As far as what Freq is best for long distance: 1) On earth communications it would be low freq's. Low Freq travel farther and can bounce off the atmosphere. But low freqs can only send low data (...)
Hello folks, just discovered this valuable forum through google. I searched the forum regarding Rayleigh channel modeling and all I found was matlab m files, so I'm chancing it and hope you might be able to help. I'm currently designing a simulink model for adaptive digital audio transmission, in an AWGN channel it works fine, but I (...)
Higher modulation schemes give you more bits per symbol... and thus higher data rates! But you need higher SNRs to reliably transfer higher modulation schemes (or ber will suffer).
helllllooo every body I have simulted the 8 psk under raylegih flat fading channel as illustrated in attachment and I compared it with theortical formula of 8psk using ber fading but I have problem there is mismatach between two result as shown in