Eigenvalue Accuracy in Matlab

Started by Randy Yates in comp.dsp16 years ago 23 replies

Hi Folks, Consider the following integer matrix: A = 1 0 -1 -1 1 0 3 -1 -2 A is a nilpotent...

Hi Folks, Consider the following integer matrix: A = 1 0 -1 -1 1 0 3 -1 -2 A is a nilpotent matrix of index 3, as can be seen by evaluating A^3. So then the only eigenvalues of A are zero. However, Matlab's "eig" function returns: ans = -7.178125070607518e-006 3.589062535291640e-006 +6.216541114106220e-...


Autocorrelation matrix with matlab

Started by thom in comp.dsp15 years ago 4 replies

Hi I would like to compute the autocorrelation matrix from a vector with Matlab. I don't have the statistical signal processing toolbox (I can...

Hi I would like to compute the autocorrelation matrix from a vector with Matlab. I don't have the statistical signal processing toolbox (I can only use "cov" and "corrcoef" functions, or build my own function). Could someone explain how I can do? Thanks a lot. Thom


MATLAB -->analog and forward

Started by ssohaib in comp.dsp14 years ago 2 replies

Hi, can anyone plz give me the matlab code for the "analog and forward" and "decode and...

Hi, can anyone plz give me the matlab code for the "analog and forward" and "decode and forwad"? thanks _____________________________________ Do you know a company who employs DSP engineers? Is it already listed at http://dsprelated.com/employers.php ?


AR Extrapolation

Started by Rune Allnor in comp.dsp17 years ago 1 reply

Hi Cris, > I am doing some research regarding the High-Resolution methods, for > applications in Automotive Radar, and before I compose my...

Hi Cris, > I am doing some research regarding the High-Resolution methods, for > applications in Automotive Radar, and before I compose my own C codes I am > playing with the Matlab intrinsic functions. That's a very wise way of working. Be aware, though, that some neat functionality you probably would want in your own code, like order estimation, usually lacks in the matlab codes.


digital communcation (matlab)

Started by Anonymous in comp.dsp14 years ago 2 replies

want to ask please what is the best matlab book for digital communaction

want to ask please what is the best matlab book for digital communaction


who has matlab implementation of multistage weiner filter?

Started by jjdoc in comp.dsp13 years ago 4 replies

I've read J. Scott Goldstein's paper 'A Multistage Representation of the Wiener Filter Based on Orthogonal Projections' and written a test...

I've read J. Scott Goldstein's paper 'A Multistage Representation of the Wiener Filter Based on Orthogonal Projections' and written a test matlab program. But it seems wrong. Who has ever implemented it ?


Range Coding in Matlab

Started by sarinatewari in comp.dsp12 years ago

Hi all, I am trying to perform range coding the same as used in NICAM cameras. I need to convert my signal but my signal has some negative...

Hi all, I am trying to perform range coding the same as used in NICAM cameras. I need to convert my signal but my signal has some negative numbers, how do I convert them to positive in Matlab. Does somebody know how to perform range coding in Matlab?


23k$US for Matlab Embedded DSP development?

Started by perf...@yahoo.com in comp.dsp15 years ago 10 replies

Let's say I want to use Matlab to do graphical control system design of an embedded DSP controller using eg TI C6x DSP, it seems I need to spend...

Let's say I want to use Matlab to do graphical control system design of an embedded DSP controller using eg TI C6x DSP, it seems I need to spend 23,000$US to do this. Is this right? Matlab 1900 + Control sys tbx 1000 + sig proc tbx 800 + simulink 2800 + rtw 7500 + rtw embedded 5000 + embedded target C6000 4000 = 23,000 phew! this makes Labview embedded look cheap! Makes me wonder i...


Experience with Matlab RTW & TC6

Started by Venu in comp.dsp12 years ago 3 replies

Hi, I'm looking at using Matlab RTW & TC6 for prototyping a design on a TI DSP. Wanted to hear what other people's experiences have been...

Hi, I'm looking at using Matlab RTW & TC6 for prototyping a design on a TI DSP. Wanted to hear what other people's experiences have been with this approach. Looking to get feedback on potential downsides and pitfalls to look out for. Would also wlecome any suggestions for alternatives. Thanks, Venugopal


Create FM stereo from Matlab.

Started by disney_snoopy in comp.dsp4 years ago 34 replies

Hi all, I would appreciate if anyone here could help me. I was thinking to create a FM stereo with the RDS and L+R and L-R channel in...

Hi all, I would appreciate if anyone here could help me. I was thinking to create a FM stereo with the RDS and L+R and L-R channel in Matlab. But i doesnt know how to do on that... Can anyone here help me plz? Thankz


RTDX -- TI C2000

Started by dolpre in comp.dsp14 years ago

I'm facing following problem when incremental build my controller: Error using ==> rtw_checkdir.p> rtw_checkdir at 47 Your current...

I'm facing following problem when incremental build my controller: Error using ==> rtw_checkdir.p> rtw_checkdir at 47 Your current working directory is: C:\Program Files\MATLAB\R2007a\toolbox\simulink\simulink\messages The Real-Time Workshop does not permit you to build programs in the MATLAB


Question about Matlab's implementation of Welch PSD when window size is larger than NFFT

Started by Anonymous in comp.dsp8 years ago 11 replies

Hi, when I looked into Matlab's PWELCH function, I noticed something that I don't understand. % Suppose we have some data x which has 1000...

Hi, when I looked into Matlab's PWELCH function, I noticed something that I don't understand. % Suppose we have some data x which has 1000 samples. x = randn(1000,1); % And we use a window of size 200. nWin = 200; window = hamming(nWin); % Now we also specify nFFT to 128 nFFT = 128; % what Matlab's PWELCH does, is like the following: % grab one frame oneFrame = x(1:nWin); % ap...


need some guidence on matlab QAM Transmitter Design:

Started by Anonymous in comp.dsp15 years ago 6 replies

hi em new student and know not too much abt matlab so plz i need some help regarding matlab codes for myproject- QAM Transmitter Design: and...

hi em new student and know not too much abt matlab so plz i need some help regarding matlab codes for myproject- QAM Transmitter Design: and i have to plot the following: also Clear Channel (infinite SNR) 1) Bit stream input 2) Mapper output (I/Q separate) 3) Mapper output constellation 4) Pulse shaping filter coefficients 5) Pulse shaping filter spectrum 6) Pulse shaping output sequ...


Generate Stereo using Matlab.

Started by disney_snoopy in comp.dsp12 years ago 12 replies

Hi all, Can anyone explain how to generate the stereo and decode it in channel L and R in Matlab. Need some explanation or example please!!!...

Hi all, Can anyone explain how to generate the stereo and decode it in channel L and R in Matlab. Need some explanation or example please!!! Would appreciate it... Thankz


design a digital butterworth filter using matlab??

Started by Anonymous in comp.dsp16 years ago 3 replies

Dear members: In the demo in my class, my prof uses matlab to design a digital butterworth filter. He first designs an analog filter using...

Dear members: In the demo in my class, my prof uses matlab to design a digital butterworth filter. He first designs an analog filter using funtion butter(, , 's') and then uses bilinear transformation to convert the analog filter to a digital filter. Since I know MATLAB function butter()allows us to directly design a digital butterworth filter, I am wondering what are the advantages of my...


Separating noise from a signal in Matlab

Started by Paulina7m in comp.dsp14 years ago 7 replies

Hi, I am very new to the subject. I spent hours online on trying to find how to use autocorrelation and fft in matlab, in order to separate...

Hi, I am very new to the subject. I spent hours online on trying to find how to use autocorrelation and fft in matlab, in order to separate a signal from noise. I have this so far: t = 0:.01:1; % independent (time) variable A = 8; % amplitude Fs = 101; % Sampling frequency frequency1 = 2; frequency2 = 12; sine...


Coefficients of cascaded FIR filters using matlab

Started by billykao in comp.dsp16 years ago 3 replies

Hello all, I have two filters, which are the cfir and pfir in the DDC. Now I want to implement the filter in GC5016 (DDC chip) and need to...

Hello all, I have two filters, which are the cfir and pfir in the DDC. Now I want to implement the filter in GC5016 (DDC chip) and need to cascade (or combine) them into one FIR filter. I have trouble to get the coefficients using matlab. Theoretically, I know the final coefficients are the convolution of numerators of two filters. In matlab, I used fir=mfilt.cascade(cfir,pfir) to see the over...


Echo Cancellation Problem (MATLAB)

Started by John McDermick in comp.dsp10 years ago 10 replies

Hello, Could anybody take a look at this matlab script and tell me why MATLABs echo canceller just doesn't cancel the echo in the test...

Hello, Could anybody take a look at this matlab script and tell me why MATLABs echo canceller just doesn't cancel the echo in the test signal I am using. https://skydrive.live.com/redir.aspx?cid=a84b49958d99df9e&resid=A84B49958D99DF9E!102 Thank you.


More PASTd

Started by Rory in comp.dsp18 years ago 1 reply

Hi For those who care: My PASTd is finally working in MATLAB. Just two observations: The algorithm seems to get certain random...

Hi For those who care: My PASTd is finally working in MATLAB. Just two observations: The algorithm seems to get certain random eigenvectors negative, as compared to those produced by MATLAB's eig function. I don't know if this is a general property of eigendecomposition (i.e. decompositions may not be unique and eigenvectors can differ by sign)....? The eigenvalues need to be scaled...


question about BF535 EZ-Kits example.

Started by kathy in comp.dsp17 years ago 1 reply

In BF535 EZ-Kits example: c_fir, there is Matlab file: fir_data.m. But I can not run the fir_data.m in Matlab due to the following...

In BF535 EZ-Kits example: c_fir, there is Matlab file: fir_data.m. But I can not run the fir_data.m in Matlab due to the following missiing function: save_fr16_init(float_to_fr16(in'), 'in.dat'); Can anyone tell me where I couild find it?