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Discussion Groups
Discussion Groups | Matlab DSP
Technical discussion about Matlab and issues related to Digital Signal Processing.
Search Results for "waveform"
generating random waveform with gussian pdf [2 Articles]
altaanah2000 - Dec 19 2006
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 i... 
ASK waveform [6 Articles]
joshln - Jan 29 2005
Does any one know how to generate an ASK waveform on MatLab, the
data stream is [11000101].Thanks
... FILTERING - HELP [2 Articles]
camdmag - Oct 20 2003
Hello
I am new to the group and in fact new to signal processing and
filtering and was wondering if anyone could help me with a problem I
have filtering in MAT... FILTERING QUESTION
camdmag - Oct 24 2003
Hello
I am new to the group and in fact new to signal processing and
filtering and was wondering if anyone could help me with a problem I
have filtering in MAT... create a pulse waveform from 200 samples of 1 [6 Articles]
sreejyothi jonnalagadda - Nov 22 2002
hai
I tred to create a pulse waveform from 200 samples
of 1 with this code
samples=sign(randn(200,1));
plot(samples(1:200)).
But i am not getting correct resu... Waveform recovery in qam
Saqib Ali - Jun 28 2004
dear all!
i want to detect the waveform of the signal modulated using qam . The
actual problem for this question lies in the phase recovery of the
carrier at t... Re: Power versus frequency of a sine wave
Nadimul Haque FAISAL - Jul 8 2007
Yah, the y-axis is Power Spectral Density (PSD).
the y-axis values are just a relative thing....the relative value of
different 'frequency band' could be used to identify the '... Power spectral density of jittered SQ waveform [2 Articles]
sudh...@infineon.com - Mar 29 2005
Hi All,
I am trying to plot the power spectral density of a jittered square waveform using psd() command.The program is given below.This seems to work fine but I have probl... How to plot a rectangular pulse waveform ? [2 Articles]
math...@hotmail.com - Nov 1 2006
Hi all out there!
I'm a newbie in this Discussion Group and beggining in matlab signal plotting and processing.
So, i need some help:
I want to plot a rectangular pulse with ... generating waveforms [2 Articles]
nobox2003 - May 14 2007
hi guys I'm very new to Matlab and DSP and am in a bit a nitch.I need
to generate waveforms of 512 samples centred on sample 200 andI also
need to normalise the amplitude of e... Need advice on sample rate conversion
sys73962 - Jun 5 2008
I am creating a pseudo WiMAX waveform that can be played as I/Q samples
out of an arb. I've completed the framing structure and populated the
carriers with random data.
I n... Decode MSK from .wav file
koen...@gmail.com - Jan 6 2008
Hi all,
I've some MSK-modulated data in a .wav file I would like to decode with Matlab. My idea was to use the wavread() function to load data from the file, and then use mskdem... spectrogram 4 frequencies and amplitudes
mark pxxxxx - Oct 2 2005
Let’s say I have a square wave at a fixed 440 Hz. I
want to use the spectrogram function, or something
else in Matlab, to extract the harmonics of the
waveform in order of... Voice recognition
clarence17 - Aug 19 2002
Hi everyone,
I am working on a voice recognition project. A speaker speakes a few pre-defined
words into the system, and the system matches the audio waveform with ... voice recognition system [2 Articles]
jergang19 - Nov 3 2003
Hi everyone,
I am working on a voice recognition project. A speaker speakes a few
pre-defined
words into the system, and the system matches the audio waveform wit... ?? sample rates more than 100kHz [3 Articles]
ravikiran_dn - Aug 25 2003
hi everybody,
i am not able to obtain a sampling rate more than 110 kHz
using MATLAB or BORLAND C++ 5. If I use more than 1 MHz sampling
rate, then more and more ... Wave from matlab to C
Stelios morfo - Sep 9 2003
In a C program I want to read a 16bit wave buffer which is stored in an
mxArray.
I have a problem with type convertion.
For example:
...
double* pr=mxGetPr(my... plotting dsbsc using a carrier and a message
Ashiru Abdul-azeez - Oct 29 2007
Hi guys,
I am new to matlab and am having problem plotting a carrier
signal,multiplting my message signal and carrier signal and plotting
the resulting doublesideband suppress... training neural network using output signal from filter
Ah_Nee - Mar 13 2005
Dear all,
I am creating a speech recognition system using simulink. I
wish to compare my output signal from my filter in neural network.
What type of i... How to do Amplitude Shift Keying Demodulation
hwcl...@gmail.com - Mar 11 2008
fc=30;
g=[1 1 0 1 0 0 1 1 1 0]; %modulante
n=1;
while n ... Simulation of Cascaded H-bridge inverter in Matlab
tyenfen - Feb 27 2007
Hi all,
I was sucess to simulate the cascaded H-bridge inverter(5 level,which
consists of 2 H-bridge modules) using Simulink in Matlab.Actually I am
doing research in cascaded... mysterious click in audio file [4 Articles]
markpxxxxx - Nov 26 2005
I wrote a Matlab program that generates overlapping timbres. It works fine, except that it
causes a single clicking sound in the audio file and I can't figure out where it is... Re: SNR
Predrag Valozic - Mar 19 2003
Hi Guat-Eng!
SNR is the quality measure for a single but composite waveform.
One part of such a waveform is declared as signal and the rest is
noise. Then, it ... Re: cross correlation and time delay
Jeff Brower - Jul 6 2006
Nikhil-
> I am new to MATLAB and even newer to signal processing. I am doing some
> work
> on Time delay estimation. I have a few questions which I hope some of you
> wou... mapping symbols onto carrier waves? ifft? [2 Articles]
Johnny - Jul 19 2007
so i'm venturing into communications research and i'm stuck on how to
change symbols into the time domain. i have modulated bits, say [0 1]
which in bpsk is just -1 and 1. how do... I need more information about the resample command
sys7...@yahoo.com - Jun 18 2008
Can anyone direct me to a good reference on learning how Matlab processes data via either the "resample" command or the "interp" command in the Signal Processign Toolbox? I need t... 802.11b matlab simu: pls comment
Abhishek Mitra - Mar 13 2003
% This Program is (C) of Abhishek Mitra, B.Tech 3rd Yr 2002
% 5.5 Mbps CCK Simulation using specs from IEEE 802.11b, No
guarantees and warantees!
%The first... RE: LFSR flat frequency [3 Articles]
Thomas Patrick - Jan 25 2005
Hello Arun & Valozic,
Thanks guys, your hints helped me to come up with a mathematical model to prove LFSR generate flat spectrum. ... Applying FFT on the data obtained from oscilloscope [3 Articles]
yeok...@ntu.edu.sg - Oct 19 2006
Hi all,
Firstly I would like to apologise if this message appears to be a repost. Anyway I saved data of a sine wave from the Agilent oscilloscope and imported it into MATLAB. I... Re: Phase wrapping when performing FFT...?
Jeff Brower - Aug 15 2006
Alex-
> I've been trying to correct for phase wrapping in my wavefront and I
> understand now why it occurs when I plot say angle(wavefront)...the
> inverse tan function in... Re: pooja, plz help me
Tarang Dadia - May 2 2005
Pooja,
I did not quite understand what you are looking for. What do you mean
by it should be constant when it peaks? You just design a integrator
and how it behaves de... Re: Eb/No, how do I calculate Eb ??
Nandan Das - Jan 28 2008
One way to make sure you are getting things right is to just generate the
transmitted waveform (without adding noise).
Find its energy (make sure you have a large enough number... RE: envelope of a signal
Egler, Mark - Mar 14 2002
I think using the absolute value is better than squaring if you want a
linear estimate of the amplitude envelope. Either way, such a technique is
more like full-wav... Re: 16 QAM in Matlab
Amit Pathania - Apr 2 2008
I see where you are mistaken - though I don't know what you mean by "I will run the program in Vector Signal Analyzer".
1. use qammod (if you don't know matlab coding very ... Freq Shift a Baseband Signal
Kelvin - Feb 19 2001
Hi All,
I wish to frequency shift a baseband signal (which is a digital signal based on a clock freq of 44100Hz, representing freq components up t... BER for OFDM
mohamed hussien - Apr 18 2008
Hi,
I'm trying to get the BER for OFDM system but the
result is not correct. Can any one tell me what is the
wrong in my program?
Regards
M. Hussien
This is my program
clear... OFDM System
Moayid Ahmed - Jun 25 2008
Hi,
I'm new member in this group. I'm trying to do MATLAB code for OFDM Tx and Rx and measure and plot all the system parameters like BER, PAPR, Synchronization, Channel Estimatio... Prony Toolbox (MATLAB GUI Tool)
Satnam Singh - Aug 26 2003
hi Group,
I have designed Prony Toolbox to perform Prony Analysis in MATLAB. The toolbox is a MATLAB GUI tool. You can download the Toolbox free from the webs... Re: FFT amplitude and frequencies
Jeff Brower - Apr 17 2007
Denilson-
> In the time domain i want to see 4 different sinewave plots for the 4
> different frequencies. But one plot with the FFT of the 4 frequencies.
> The problem is ... OFDM Transceiver
mohamed hussien - Jun 6 2008
Hi
I want to do a program for OFDM transceiver and add
all the channel effects and measure all the OFDM
parameters. Can any one help me to complete this
program? Check the foll...