Matlab

rayleighchan Matlab 2009b
Dear All, I have the following simple code: fd = linspace(50,140,10); h = rayleighchan(1e-6,50); h.ResetBeforeFiltering = 0; for frame = 1:10 h.MaxDopplerShift = fd(frame); y = filter(h,j*ones(1,1000)); end At the end I have NumSamplesProcessed: 1000 instead of 10000. The problem is that th... 8 Mar 2010 11:55

variable label in scatterplot matrix
Hi, I am trying to label my scatterplor matrix (5*5). The help menu of 'plotmatrix' does not say anything. can anyone help? cheers ... 5 Mar 2010 06:07

Why does Matlab say these are not equal?
Can someone please explain why the last statement is returning 0 when the two statements seem equal to me. EDU>> k=3; EDU>> (9*2^k - 8*3^k)/6^k ans = -0.666666666666667 EDU>> u(k+1) ans = -0.666666666666667 EDU>> (9*2^k - 8*3^k)/6^k == u(k+1) ans = 0 The formula on the second line is the closed ... 5 Mar 2010 16:12

BER for BPSK
Dear Sir.. I asked this questions to you in others posts also, I'm repeating my question here, I'm using reyleighchan, say for 1000 bits of 100 parallel streams. now i set my channel with chan=rayleighchan and some required parameters, then coeff=chan.PathGain; wud give me the channel status and at the receiver ... 5 Mar 2010 03:57

IMAGE MATCHING USING SCALE INVARIANT FEATURE TRANSFORM (SIFT)
doubt 1: in this algorithm, Lowe shows 3 intervals on each pyramid level is the best, but 2 is also reliably good. .. so actually what does the term "interval" refers too ? doubt 2: for example: we have 4 scales per octave , then we would blur the image and proceed it for DOG(we would get 3 scales per octave)... 5 Mar 2010 07:13

reading 100 images using single imread command
hi.... how to read many images using for loop.... or is there ant other way to read 100 images at a single execution using only once the command "imread"..... can be it done buy for loop or some other way ... 5 Mar 2010 03:57

Extract all non zero rows from array
Hi i want to extract all non zero rows from a matrix how do i do this? My Matrix has 5 cols and roughly 20 rows a row will either have all 5 cols non zero or all 5 cols zeros . How do i make a copy if the array only extracting the non zero rows to make for example a 2 x 5 matrix Thanks ... 5 Mar 2010 05:02

Goodness of fit
Hi ; I have some data. I want to determine the distribution of this data. In order to determine it, I have applied four different probability distribution functions namely, Gaussian( Normal), Rayleigh, Exponential and Weibull by Statistical toolbox. In addition to this, I have obtained each distribution function param... 16 Mar 2010 13:55

gradient
Hello Friends, I am looking for some guidance in radial gradients. consider a matrix x = [1 2 3 4 5; 11 12 13 14 15; 21 22 23 24 25; 31 32 33 34 35; 41 42 43 44 45; 51 52 53 54 55]; Gradient of the 1st row is 2-1,3-2,4-3,5-4...etc and so on and so forth for the colu... 5 Mar 2010 03:57

Finding the angle...
I have a line, t=(0:30:30); % Defines t from 0 to 30 with interval of 30 x=-0.28*t.^2+6.5*t+61; % Creates array x y=0.18*t.^2-8.5*t+65; % Creates array y plot (x,y,'y') % Plots the two equations defined above , and I need to find the angle from that line to the x axis. I can do this mathmatically on paper, bu... 5 Mar 2010 05:02