**FREQUENCY MODULATED PULSE (CHIRP)**Can any one please help me with the threory and any mathematics involve
with the frequency modulated pulse (chirp). I have tried but could no
find much material on the internet.I need to write a report.
cheers
>Can any one please help me with the threory and any mathematics involved
>with the frequency modulated pulse (chirp). I have tried but could not
>find much material on the internet.I need to write a report.
>
>cheers
>
>
*********************************************
Check out the article of John C. Burgess "Chirp design for acoustica
system identification&q...

**matlab code for modulation**hi can any pl give code 8psk, 16 psk, 32 psk and 8 qam, 16 qam, 32 qam ,64 qam and dpsk ...
regards
chethan kumar On 18.11.12 11:28 , chethan wrote:
> hi can any pl give code 8psk, 16 psk, 32 psk and 8 qam, 16 qam, 32 qam ,64 qam and dpsk ...
>
>
>
>
> regards
> chethan kumar
Homework?
On 18/11/2012 6:10 PM, Tauno Voipio wrote:
> On 18.11.12 11:28 , chethan wrote:
>> hi can any pl give code 8psk, 16 psk, 32 psk and 8 qam, 16 qam, 32 qam
>> ,64 qam and dpsk ...
>>
>>
>>
>>
>> regards
>&g...

**16QAM modulation MATLAB code**Hi,
I am facing a problem in generating a waterfall graph with the BER i calculate for each SNR value by using 16 QAM modulation. Instead of getting a waterfall graph, I get a straight line. Anyone can helps me?
It's urgent.
Hope to hear from you soon.
Thanks.
P.S : Please pm me so that we can have further discussion on my problem.
natalie_nyl1987@msn.com
"Yee Lan " <natalie_nyl1987@msn.com> wrote in message <ikphal$e8u$1@fred.mathworks.com>...
> Hi,
>
> I am facing a problem in generating a waterfall graph with the BER i calculate for each SNR value by u...

**frequency modulation simulation in matlab**i an doing an electronics project and would like to use matlab to
simulate what my hard ware is doing
basically what im doing is frequency modulating a sound wave onto the
mains 220v 50hz signal and transmitting it then the other end
recieving the 220v 50 hz signal and demodulating it to extract the
sound wave any tips on where i should look or some sample code would
be great i have little to know background to matlab so any help would
be greatly appreciated
cheers
Eoin F
...

**Frequency Modulation using Matlab**HEllo All,
I am having one querry regarding MATLAB.
What I would be doing is that I will give the signal from a microphone
and I have to use MATLAB so that the signal gets frequency modulated
and then I will be taking the output from the headphone jack and mix it
with a carrier frequency [Local Oscillator] and send it to the spectrum
analyzer.I am doing a project named (Software Radio) where you have to
do the signal modulation using Software
So could some one help with the code I have written below
it is giving the error.
??? Error using ==> +
Matrix dimensions must agree..
Regards
Nitin...

**Amplitude modulation frequency domain in matlab**Hi can anyone help me displaying the frequency domain with different value of users input of MODULATING INDEX
here's my codes
%This script shows the different Amplitude modulated waves with different
%modulation index
%variables
A=5; %signal amplitude
t=0:0.001:1; %period
Fm=4; %message frequency
Fc=50; %carrier frequency
f1=100;
f2=200;
f3=300;
set(0,'defaultlinelinewidth',2);
%user will input desired modulation index
m1=input('Enter 1st desired modulation index: ');
m2=input('Enter 2nd desired modulation index: ');
m3=input('Enter 3rd...

**Funndamental frequency matlab code required...**Hi friends i am working on emotion recognition..for this i need to
have F0 curves in HZ scale.i.e,fundamental frequency in HZ on y-axis
and time in ms (frames) on x-axis.Do any one please help me by telling
a method to find the matlab code
On Feb 5, 1:04=A0pm, gadde.ravin...@gmail.com wrote:
> Hi friends i am working on emotion recognition..for this i need to
> have F0 curves in HZ scale.i.e,fundamental frequency in =A0HZ on y-axis
> and time in ms (frames) on x-axis.Do any one please help me by telling
> a method to find the matlab code
I guess you could take the FFT to get the...

**Waveform Dispersion Penalty Code in Matlab**Has anyone ever used Matlab to calculate waveform dispersion penalty, TWDP?
I have Matlab code to calculate it however, I've run into some problems and I looking for some input to help move me along.
Thanks,
Tom
...

**matlab code for frequency hopping system**hi all
i need a matlab code for frequency hopping system in real time.please
help me..............
...

**Help: MATLAB Code to Plot Rectangular Pulses**Please I need help on MATLAB code to generate random 20 bit message and plot it as a rectangular pulse. I appreciate your help.
On Oct 14, 6:05=A0am, "Adeyemi " <netf...@yahoo.com> wrote:
> Please I need help on MATLAB code to generate random 20 bit message and p=
lot it as a rectangular pulse. I appreciate your help.
-------------------------------------------
How about
message =3D rand(1,20)>0.5
bar(message)
"Adeyemi " <netfluz@yahoo.com> wrote in message <j791h9$3bu$1@newscl01ah.mathworks.com>...
> Please I need help on MATLAB code to gener...

**time-frequency analysis for seismic signal matlab code**I want to get matlab code for time-frequency analysis for seismic
signal,such as s-transform,hht-transform and so on.
Help!!!
...

**Frequency Time plot of a time series MatLab code**Dear all,
I have recorded vibration signals from a motor bearing as a
time series. I would like to plot a Frequency vs. Time
chart for the time series using a moving window of size
1024 data points with a shift 256 data points for the
entire 200K data points in the series. Can anyone please
provide a mathlab code for the same.
Thanks for reading and advance thanks for the contributors.
Unni Vat
No, but if you type
doc fft
you'll start down the right path
"Unni Ajith" <unnivat@gmail.com> wrote in message
<famd8i$q3j$1@fred.mathworks.com>...
> Dear all,
...

**Frequency Response between SS coded by Matlab and Result in Time Domain**Hi All,
I try to validate the frequency response of my state-space model with the result from time domain simulation. Let me tell you what I have done:
1. My state-space model (named ss_Mo) is coded by Matlab and it is MIMO (4 inputs, 4 outputs). To get the frequency response I use command >>bode(ss_Mo). Then I will get the 32 graphs (16 for gain in decibel, 16 for phase). Each input provides 4-gain and 4-phase curves.
Q1.If I want to choose only one gain and one phase, how can I use command to select only the interesting curves and replot them? Gain should be in decibel and the range...

**Req: MATLAB Code for enhancing some frequency components of a speech signal**Hi,
I am working on the topic "Speech Enahancment".
Using MATLAB,
I can not enhance a band of frequency componenets of a speech signal
and
I can not play a filtered speech signal.
Please if anyone can help me,I will be greatful....
can mailme to:
naveencolloorub4u@yahoo.com
"chetty" <naveencolloorub4u@yahoo.com> wrote in message
news:dpw4rshw4axj@legacy...
> Hi,
>
> I am working on the topic "Speech Enahancment".
>
> Using MATLAB,
>
> I can not enhance a band of frequency componenets of a speech signal
>
> and
>
>...

**need matlab source code for m-ary fsk modulation**undefined
...

**time-frequency analysis for seismic signal matlab code #2**I want to get matlab code for time-frequency analysis for seismic
signal,such as s-transform,hht-transform and so on.
Help!!!
...

**how to write matlab code to design lpf that removes frequency above 5 khz**how to write matlab code to design lpf that removes frequency above 5 khz
On 9/9/2013 1:34 AM, maha wrote:
> how to write matlab code to design lpf that removes frequency above 5 khz
>
see http://www.mathworks.com/help/dsp/examples/designing-low-pass-fir-filters.html
They have code there with cutoff frequency of 0.4 pi (rad/sample) example.
remember that you need to convert your analog frequency to digital first,
then use this example as it is given. It is all there. copy and paste.
To convert corner stopband frequency to digital, use the formula
w=2*pi (f/Fs) where f=5...

**kind request to send me the matlab code of steganography using frequency hopping**sir,
i am a final year enginering student from electronics and
communication department. i am doing my project on steganography
using frequency hopping.
so i kindly request you to send me the same code with thw
description.
...

**how to convert QAM(quatratic amplitude modulation)matlab code into c language?**undefined
...

**source(.wav file)--->A/D(PCM)---->coding---->modulation(QPSK)--->Chanel(+ nois)--->demodulation--->decoding----> D/A--->sound(.wav file) MATLAB #2**How to approach the problem
source(.wav
file)--->A/D(PCM)---->coding---->modulation(QPSK)--->Chane
l(+ nois)--->demodulation--->decoding---->
D/A--->sound(.wav file) MATLAB
...

**unable to solve : source(.wav file)--->A/D(PCM)---->coding---->modulation(QPSK)--->Chanel(+ nois)--->demodulation--->decoding----> D/A--->sound(.wav file) MATLAB**Unable to get the solution for :
source(.wav
file)--->A/D(PCM)---->coding---->modulation(QPSK)--->Chane
l(+ nois)--->demodulation--->decoding---->
D/A--->sound(.wav file) MATLAB
...

**MATLAB algorithm to MATLAB function code or C code**hallo firends,
Can any body help me write this below code into MATLAB object oriented code or C code form please?
M=50; % total number of periods. (choose for 1s duration)
f0 = 50; % fundamental AC frequency
T0 = 1/f0; %fundamental AC period
T = M*T0; %Time for M periods (integer M)
N=30; % sample points per period.
dt = T0/N; % Sample at N points per period (integer N > 20)
t = dt*[1:M*N-1]; % Sampling time array
A0=120/2; % amplitude of AC signal. Divide by 2 or maybe sqrt (2) ?
AC=A0*sin(f0*t*2*pi); % create AC signal.
DC0=50; % DC amplitude
DC=DC0*ones(1,le...

**converting c++ code to Matlab code using Matlab 9**im working on a project using matlab. i want to use some of the already writen codes in C++. i want to use these codes in my project rather than writing them from scratch. is there some way or a chunk of code that might convert C++ code to matlab code or a ".c" file to ".m" file. please if anyone knows do let me know at the earliest.thanks
"fatima " <fatima_naseem2002@yahoo.com> wrote in message <i8ugqn$e9p$1@fred.mathworks.com>...
> im working on a project using matlab. i want to use some of the already writen codes in C++. i want to use these c...

**'Matlab Code' to 'Embedded Matlab fun code'**Dear friends,
I have a Matlab code to process a pure analog signal 'u'. Now I want to implement it in Simulink and I want to use it in 'Embedded Matlab fun block' so i need to transform 'Matlab code' to 'Embedded Matlab fun code' to perform the task.
The Matlab code is as follows:
%%%%%%%%%%%%%%%%%%%%%
u_abs = abs(u);
major_th = 1.5e-1;
minor_th = 1.8e-2;
major_peak_value = [];
minor_peak_value = [];
pos = 1;
pos_max = 1;
while ~isempty(pos)
[m pos_max(end+1)] = max( u_abs( pos : pos + 10) );
pos...