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Re: PAPR calculation

Started by parl...@gmail.com in Matlab DSP15 years ago

Hello Sabbir I think that has to work according to formula,it seems correct.. Did you run this program? Let me know.. and would you be able...

Hello Sabbir I think that has to work according to formula,it seems correct.. Did you run this program? Let me know.. and would you be able to tell me how do we apply this concept for OFDM? I am working on reducing PAPR in OFDM and went through the concepts and methodologies,still i am not sure how exactly to get the power values of carriers in OFDM and find PAPR. Please help me.. AND re...


Remove lower frequence

Started by acepsut8 in Matlab DSP15 years ago 4 replies

Hello all, having the spectrum of 5 cosine functions I need to remove the lower one, does anybody knows how to do this? I have tried with...

Hello all, having the spectrum of 5 cosine functions I need to remove the lower one, does anybody knows how to do this? I have tried with moving average and this works correctly in removing task, but I get alterated amplitudes and phases in 4 remaining periods. What should I use to get removed lower one without problems? Thanks Alberto Here is the code to create 5 cosine functio...


Time Delay Measurement in MATLAB

Started by spor...@gmail.com in Matlab DSP15 years ago 2 replies

Hello All, I am trying to measure fluid velocity in an AVI file, and am doing this by converting each frame to an image and measuring the mean...

Hello All, I am trying to measure fluid velocity in an AVI file, and am doing this by converting each frame to an image and measuring the mean intensity of the pixels in two different windows spaced out. Now that I have two different signals that should be theoretically time delayed, I need to cross correlate them to see the time delay, but I am having trouble with xcorr. I seem to obtain the sig...


Custom Board

Started by Adrielle de Carvalho Santana in Matlab DSP15 years ago

Hi, I'm from Brazil and I'm using the MATLAB to generate a code for my DSP with the model that I have in Simulink. My DSP is a Blackfin 537 of...

Hi, I'm from Brazil and I'm using the MATLAB to generate a code for my DSP with the model that I have in Simulink. My DSP is a Blackfin 537 of Analog Devices. I need some information about the block Custom Board in Simulink the I use to generate a project in Visual DSP++. I create a subsystem with my controller and I use the Custom Board inside this subsystem. What I needed to know, is if t...


[Fwd: Re: Time Delay Measurement in MATLAB]

Started by Jeff Brower in Matlab DSP15 years ago

Steve- Sorry, that should say ... you're not actually measuring the movement of a particle between *successive*...

Steve- Sorry, that should say ... you're not actually measuring the movement of a particle between *successive* images. -Jeff ------------------ Original Message ------------------ Subject: Re: [matlab] Time Delay Measurement in MATLAB From: "Jeff Brower" Date: Mon, August 17, 2009 6:07 pm To: "Steve" Cc: m...@yahoogroups.com --


Re: [Fwd: Re: Time Delay Measurement in MATLAB]

Started by Jeff Brower in Matlab DSP15 years ago

Steve- > Thanks for the quick responses. But the windows check the pixel values every > frame so I think it is measuring the movement of...

Steve- > Thanks for the quick responses. But the windows check the pixel values every > frame so I think it is measuring the movement of gaps between successive > images. The output has two signals; one is a *roughly* delayed version of > the first signal, showing there is some correlation between the windows. But > the xcorr function doesn't seem to be giving me the right delay, because by


matlab to exe

Started by "samira.khodadadi" in Matlab DSP15 years ago 2 replies

hello i am working on a face recognition project using matlab and i wanna convert my matlab program to exe file. may matlab version is...

hello i am working on a face recognition project using matlab and i wanna convert my matlab program to exe file. may matlab version is 7.1 how can i do that? regards


Re: finding time delay using xcorr!

Started by spor...@gmail.com in Matlab DSP15 years ago

Dear Henry, Your code doesn't work for time delays other than 500. For example, if you change the code to : fs=1000; fo=200 ...

Dear Henry, Your code doesn't work for time delays other than 500. For example, if you change the code to : fs=1000; fo=200 t=0:1/fs:1-1/fs; x=sin(2*pi*fo*t).*exp(-20*t); y=[zeros(1,400) x(1:length(x)-400)]; %changed 500 to 400 delay xc=xcorr(x,y); [a,delay]=max(xc) subplot(311),plot(x) subplot(312),plot(y) subplot(313),plot(xc(1:1000)) Then the code says the delay...


Problems with Butterworth f. when order>=10

Started by adap...@yahoo.co.jp in Matlab DSP15 years ago 2 replies

Hello everybody. Thank you always for your help. I have a question regarding Butterworth filters with order > =10. I was out of the office,...

Hello everybody. Thank you always for your help. I have a question regarding Butterworth filters with order > =10. I was out of the office, so couldn't use MATLAB. Instead I used Octave. I tried to do the following: > [b a]=butter(10,0.015); > y=filter(b,a,x); for a original signal x.(a sin signal) Now when ploting I can see this gives me a filtered signal (although a little strange


How to plot three Vector of differenti size in 3D

Started by Ahmad Jan Khattak in Matlab DSP15 years ago 1 reply

Dear all, I know about the function plot3 or line. Which works for same dimensions of three vectors. Is there any function which could be used...

Dear all, I know about the function plot3 or line. Which works for same dimensions of three vectors. Is there any function which could be used to plot 3 vector of different dimensions in 3D. Thanks


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