Forums Search for: Random
Orthogonal random matrix
Hi, I want to generate orthogonal random matrix in matlab. How can I do it? Cheers ZAB
Hi, I want to generate orthogonal random matrix in matlab. How can I do it? Cheers ZAB
Negative Random number generation
Hello, I need to generate random numbers, for example, in the range -20 to 20 or -150 to 150 or so for 1200 points. How can I do this using...
Hello, I need to generate random numbers, for example, in the range -20 to 20 or -150 to 150 or so for 1200 points. How can I do this using 'rand' function in matlab?? I got one way to do this from this forum, like: a = unifrnd (-2 , 2 , [1024,1]); and, it was said that rand is equivalent to unifrnd. So, I tried with rand but the warning says: Warning: Input...
plotting a random variable in matlab
Hi All :) i need to plot the probability density function(pdf) of Z, given that Z = X + Y. X is exponentially distributed with mean x1, Y is...
Hi All :) i need to plot the probability density function(pdf) of Z, given that Z = X + Y. X is exponentially distributed with mean x1, Y is exponentially distributed with mean y1. X and Y are independent random variables. the pdf of Z is given by the convolution of the pdfs of X and Y. How can i plot the pdf of Z in Matlab? many thanks in advance :)
Generate a multi-level pseudo-random series
Dear all, I am wrting my thesis now and I need to generate a mult-level pseudo-random series to compare my method. Is there anyone possible to...
Dear all, I am wrting my thesis now and I need to generate a mult-level pseudo-random series to compare my method. Is there anyone possible to send me the program that can generate this series. Thanks you guys. Cheers, Jenny
LP filter..
hi colleagues... i have generated a random signal in matlab with normal distribution (my code is written below). my signal is high...
hi colleagues... i have generated a random signal in matlab with normal distribution (my code is written below). my signal is high frequency and i want to filter it to have lower frequencies at about 1/300
PRNG for dither
Hi, I am currently researching dithered quantization. Does anyone know of a commonly used pseudo-random number generator that is used to...
Hi, I am currently researching dithered quantization. Does anyone know of a commonly used pseudo-random number generator that is used to produce dither signals? The application is not spefic to audio or video or images, I am just trying to compare the statistical properties of random signals which are quantized using different PRNG's to generate the dither signal. thanks, Will
Gaussian pdf
Dear Sir, I am working on Gaussian random Process, where I am stuck from few days because of the following two difficulties. 1. I have...
Dear Sir, I am working on Gaussian random Process, where I am stuck from few days because of the following two difficulties. 1. I have different segments of Gaussian distributed random sequences, of which two sequences among them are templates . I need to find the joint pdf and thereby marginal pdf between a segment and the templates. And thereby the probability of the segment bei...
generating random waveform with gussian pdf
Good day all, Want to make a program that generate a random waveform with a Gaussian pdf of zero mean and 2 Volts rms. Using vector of length...
Good day all, Want to make a program that generate a random waveform with a Gaussian pdf of zero mean and 2 Volts rms. Using vector of length 2048 and let the voltage values in the vector represent samples taken at 1millisecond intervals, so that the total duration of the signal is 2048 millisecond. plot the results waveform calculate the mean-square value of the wave form I kno...
Initial Seed Problem
Hi I am working on a simulink model of bluetooth DM1 packet transmission. I have used a random generator for the input and also have used...
Hi I am working on a simulink model of bluetooth DM1 packet transmission. I have used a random generator for the input and also have used binary symmetric channel with a certain error probability. The problem is that i dont know how to specify the initial seed values for both the random generator and the symmetric channel. What can be the appropriate seed values. I have tried the s...
Re: PAPR Reduction or Pre-distortion Techniques for OFDM
I have gone thtough some literature on PAPR reduction techniques. Boardly i= t can be divided as: 1. Signal Processing 2. Coding (Random...
I have gone thtough some literature on PAPR reduction techniques. Boardly i= t can be divided as: 1. Signal Processing 2. Coding (Random encoding, Golay Sequence, Cyclic Code) 3. Random Scrambling (Costellation Design, Selective Mapping, Partial Trans= mit sequence) Of which I am mostly interested in the first one because that do not need a= ny change in the inner transmitter functions ...
Generating random no.s with a certain cdf
Hello All, If there is a certain CDF(Cumulative Distribution Function) , how can I generate random numbers ( source ) with the...
Hello All, If there is a certain CDF(Cumulative Distribution Function) , how can I generate random numbers ( source ) with the same value of CDF ? Thank you! Regards, Bavithi.
Correlated Random Sequences
Hi, How do i generate correlated random sequences using Matlab? A sample code would be very helpful. Shailesh V Khanolkar
Hi, How do i generate correlated random sequences using Matlab? A sample code would be very helpful. Shailesh V Khanolkar
generate random vector with a given joint pdf
Hi all I am trying to generate a random vector (3x1) with a given multivariate probability distribution function. The joint pdf is very...
Hi all I am trying to generate a random vector (3x1) with a given multivariate probability distribution function. The joint pdf is very similar to Poisson distribution, but it is not directly convertible to Poisson. Any help on this would be highly appreciated. thanks in advance. Tahmina
PAPR calculation
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
conv and deconv functions
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes...
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes which I convolve with its fliped version, then I deconvolve the result obtained from convolution with the fliped version of random process, the proce
normal random noise with zero mean, variance not equal to 1
Hi folks, How do I generate a random noise with zero mean, variance not equal to 1. randn() is for zero mean, variance=1 case....
Hi folks, How do I generate a random noise with zero mean, variance not equal to 1. randn() is for zero mean, variance=1 case. Thanks, Mu
conv and deconv functions
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes...
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes which I convolve with its fliped version, then I deconvolve the result obtained from convolution with the fliped version of random process, the proce
random coefficient for logit models
Anybody here has experience on writing code for logit models with random coefficients? Thanks a lot!!!
Anybody here has experience on writing code for logit models with random coefficients? Thanks a lot!!!
conv and deconv functions
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes...
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes which I convolve with its fliped version, then I deconvolve the result obtained from convolution with the fliped version of random process, the proce
conv and deconv functions
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes...
Hi all, I am having problems using the combination of conv and deconv function. I have a large number of random processes which I convolve with its fliped version, then I deconvolve the result obtained from convolution with the fliped version of random process, the proce






