I am working on baseband portion of a software defined radio on a Blackfin DSP platform. Using I and Q signals in the quadrature modulator , I...

I am working on baseband portion of a software defined radio on a Blackfin DSP platform. Using I and Q signals in the quadrature modulator , I want to try out various modulation schemes like AM, FSK,FM,BPSK,GMSK, QPSK and QAM. I am not very familiar with MATLAB. I would like some help on simulation of the quad modlr block with MATLAB codes, not with the tool boxes. Also some information is needed ...

Dear all We have some heavy matlab signal processing code to handle Giga-byte data files as inputs. We are contemplating to buy a powerfull...

Dear all We have some heavy matlab signal processing code to handle Giga-byte data files as inputs. We are contemplating to buy a powerfull computer do handle this, the good news is I have a very generous budget for this. Please give me pointers about workstations that we can buy. We were thinking the OS being Windows. Thanks in advance. Paramonte

Hi, I would like to understand more and more about OFDM and its applications for my work. I need to simulate it with Matlab. If possible,...

Hi, I would like to understand more and more about OFDM and its applications for my work. I need to simulate it with Matlab. If possible, could you supply me matlab code which will be enable me to simulate OFDM ( that will be very helpful for understanding OFDM and its concept). Thx in advans, Karthik Balaguru

Hi, for the following code in matlab: t = (0:0.00048828:1); y = sin(2*pi*12*t); z = abs(fft(y)); power = z(12) which I hope produces a...

Hi, for the following code in matlab: t = (0:0.00048828:1); y = sin(2*pi*12*t); z = abs(fft(y)); power = z(12) which I hope produces a second of data for a sine wave at 12 Hz, sampled at 2048 per second, and 'power' is equal to the power of 12 Hz. Unfortunately, figure; plot(z) shows clearly that the peak is at 13, instead of 12, Hz. Also, if I try 10 seconds of data, t ...

dear all i am new to comp.dsp. i have just finished simulation of dmt using matlab. now i want to simulate dwmt.can i use my existing...

dear all i am new to comp.dsp. i have just finished simulation of dmt using matlab. now i want to simulate dwmt.can i use my existing code? how to use ifwt instead of ifft.in matlab dwt and idwt function is available. but not ifwt or fwt which is suggested by many authers. need ur help for direction . thanks in advance. pradip

hello, I have generated a ecg signal in matlab. Now I want to add noise of fixed frequency of 50 Hz and a noise of 0.2-0.5 Hz. IS there any...

hello, I have generated a ecg signal in matlab. Now I want to add noise of fixed frequency of 50 Hz and a noise of 0.2-0.5 Hz. IS there any provision in matlab to generate noise of specified frequency. Plz help me with this

I am using MATLAB to analyse EMG signals. So far I have rectified the data and performed a STFT (using a Hamming Window). I am now looking...

I am using MATLAB to analyse EMG signals. So far I have rectified the data and performed a STFT (using a Hamming Window). I am now looking to calculate the median frequency of the power spectrum and would be grateful if someone could advise me on the best way to do this. Thanks

Hello, Could anyone give me a link to a ready made Artificail Neural Network for Speech recoginition in MATLAB? MATLAB has one for...

Hello, Could anyone give me a link to a ready made Artificail Neural Network for Speech recoginition in MATLAB? MATLAB has one for character recoginition. However, I need the code for an ANN that uses phonemes to incorporate in my project. Thanks

I am looking for Matlab codes for using Kalman filters to estimate unknown parameters, which, I hope, can be an alternative to the maximum...

I am looking for Matlab codes for using Kalman filters to estimate unknown parameters, which, I hope, can be an alternative to the maximum likelihood estimate of the parameters... How to do that? And could anybody point me to some samples, tutorials, resources, examples, Matlab codes? Thanks a lot!

Hi, Matlab has a function called iirgrpdelay which helps in designing iir group delay equalizer filters. Any idea as to how this...

Hi, Matlab has a function called iirgrpdelay which helps in designing iir group delay equalizer filters. Any idea as to how this function can be re-written for people who are not using matlab? Bharat Pathak

Hallo everybody, I've got a little question about the way I'm modelling a multipath-channel with AWGN using MATLAB for my...

Hallo everybody, I've got a little question about the way I'm modelling a multipath-channel with AWGN using MATLAB for my OFDM-Simulation. Can anybody tell me whether the way I'm doing it is correct or not? I've implemented to following code: %-------------------------------------------------------------------- % tx is the transmitted discrete OFDM-basebandsignal % which is normalize...

Hello DSP folks, I am looking for a simple method to implement the following function: I have a 3D matrix P(i, j, k) with the last index 'k'...

Hello DSP folks, I am looking for a simple method to implement the following function: I have a 3D matrix P(i, j, k) with the last index 'k' representing a time variable. I also have a 3D matrix of time-delays d(i,j), and I wish to delay the 3D P matrix using the delays specified by the 2D matrix. Is there anyway to do it directly in MATLAB, i.e., using a single operation instead of a...

Suppose A is a partial Fourier operator of dimension MxN with M

Suppose A is a partial Fourier operator of dimension MxN with M

Hi There, I have been searching for the Matlab code for 40, 32, 24, 16 KBits/s ADPCM code (G.726) for the last one week but could not find a...

Hi There, I have been searching for the Matlab code for 40, 32, 24, 16 KBits/s ADPCM code (G.726) for the last one week but could not find a good working/ compliant code. Can anyone tell me where to get free version of the ADPCM code in Matlab Thanks, jagadeesh

Hello All, In Matlab, I have this function: y = 20 * (x.^2).* ((1-x).^4) .* cos (12 * pi * x); When I try to see the result of y(0.5) on the...

Hello All, In Matlab, I have this function: y = 20 * (x.^2).* ((1-x).^4) .* cos (12 * pi * x); When I try to see the result of y(0.5) on the m-file, the system generates a synatx error: ??? Error using ==> run Attempted to access y(0.5); index must be a positive integer or logical. The question is that how can I access this value as I need to sample this function into 1000 intervals,

Hello, My name is maz and I am working on simple sound source localization. My question is how do I calculate the delay between these two sound...

Hello, My name is maz and I am working on simple sound source localization. My question is how do I calculate the delay between these two sound signals using cross-correlation in matlab. (I am not considering sound for the start as i have taken the readings in a sound free environment). I do not know since I am still learning. Can you please explain with the help of the matlab code. Thank you.

dear friends, can any one please provide information regarding costas array and are there any matlab programs to generate...

dear friends, can any one please provide information regarding costas array and are there any matlab programs to generate costas array sequences for different lengths. it will be most helpfull to me. thank you. regrds, varma

Hi, May I know how to generate complex spreading code in Matlab? For example, Gold sequence or Walsh Hadamard... Thanks.

Hi, May I know how to generate complex spreading code in Matlab? For example, Gold sequence or Walsh Hadamard... Thanks.

Can Anybody be kind enough to tell how to save the audio file played in matlab !! I tried with wavout but cannot save !! please tell me !!...

Can Anybody be kind enough to tell how to save the audio file played in matlab !! I tried with wavout but cannot save !! please tell me !! thanks

Hi All, I was trying to use filter function in matlab with complex co-efficient. The result however is not matching with hand...

Hi All, I was trying to use filter function in matlab with complex co-efficient. The result however is not matching with hand calculation. Interestingly the real part of output matches correctly but imaginary part is negative . So i am not sure where its going wrong and whether i am interpreting results rightly. Please throw some light code a = [1.0000 + 0j 0 - 1.9556j -0.9565 +0j...