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21 Threads found on edaboard.com: **Hamming Matlab Code**

Hallo guys...I am facing a huge problem to the two questions below cause i have never had used **matlab** in the past..:
1) Investigate functions available in **matlab** for GF(2) calculus and repeat a (5, 2) **hamming** **code** by using **matlab**.
2). Design syndrome de**code**r for Q.5 by using (...)

Digital Signal Processing :: 05.12.2010 15:57 :: Georgechalkida :: Replies: **4** :: Views: **1766**

Help please!!!!
i have sinwave with 0.1 v amplitude and 1khz frequency mixed with 5v white noise.
i used FFT in **matlab** to simulate.
1-(Study the use of additional mean value calculation of every data set of FFT spectrum and how it affects the visibility of a present signal.). so, how can i use additional mean value???????????
2-W

Digital Signal Processing :: 27.09.2009 08:19 :: program2 :: Replies: **0** :: Views: **1355**

Hello
I need to compare the(7,4) **hamming** **code**d bit error probability with the un**code**d bit error probabity and a Q function.
The **matlab** **code** which i have compare the theoretial un**code**d ber with **hamming** (7,4) **code** (...)

Digital communication :: 13.04.2011 17:57 :: Priya1987 :: Replies: **0** :: Views: **2677**

e.g a='1000001' and b='1110001' --> dist=**hamming**(a,b);
one solution is dist = sum(a ~= b);
and other solution is to use pdist Pairwise distance between pairs of objects - **matlab**

Digital communication :: 06.09.2011 05:16 :: ckshivaram :: Replies: **1** :: Views: **4064**

Hi, Please i need help with this **matlab** **code**.
i am using this melcept function for different samples of me saying the word "one"
here is my **code**
=wavread('one.wav'); %Read In Sample
a=0.95;
aaaa1=filter(,1,aaaaa1);
aaa1= melcepst(aaaa1,fs);
i get an output for the different samples of me saying one as 54

Digital Signal Processing :: 09.06.2013 04:41 :: oiyela :: Replies: **0** :: Views: **345**

Have you tried searching MathWorks for "DTMF"? This is the first hit:
By the way, the DTMF tones in the wav file are 201020. I did this in **matlab**:
x = wavread('batandsplab.wav');
specgram(x, 512, 8000, **hamming**(512), 500);
colormap(bone.^4); ylim();

PC Programming and Interfacing :: 13.03.2005 11:27 :: echo47 :: Replies: **18** :: Views: **8427**

I came across the following problem in FIR design using window and convolution techniques .
Project a FIR filter using a **hamming** window to achieve the following specifications:
Passband 0,3-3,4 kHz
Stopband 0-0,2 e 4-8 kHz
Stopband atenuation > 25 dB
Sampling frequency 32 kHz
Since the transition band is different , in order to solv

Digital Signal Processing :: 08.10.2005 22:53 :: claudiocamera :: Replies: **0** :: Views: **1074**

Try amplitude envelopes, such as **hamming** weighting. The various weighting functions provide different trade-offs between attenuation of the unwanted frequencies and widening of the spectral peaks.
t = linspace(-5*pi,5*pi,1000);
x1 = cos(2*pi*5*t); x2 = cos(2*pi*10*t); x3 = cos(2*pi*20*t); x4 = cos(2*pi*50*t);
x1 = cos(2*t); x2 = cos(2*pi

Digital Signal Processing :: 07.07.2007 23:21 :: echo47 :: Replies: **8** :: Views: **1055**

hey guys im new here and to **matlab** and ive got a question-
does anyone have like a sample of the **matlab** **code** that i would use to dtermine the correct order of a filter ( we've been given the stopband freq, passband freq ) for a kaiser window and a **hamming** window . I know that there's a function called kasier_ord.m / (...)

Digital Signal Processing :: 17.10.2007 10:48 :: hustlercreed :: Replies: **3** :: Views: **837**

hi,
u can develope some basic encryption and decryption algorithms like RSA, CRC, **hamming** **code** for error handling etc. and can develop a crypto syatem.
Thanks..
HAK..

Digital Signal Processing :: 14.06.2009 01:51 :: hiral.kotak :: Replies: **2** :: Views: **1709**

Hi Everybody,
I need confirmation check in my project
I used a **hamming** **code** structure by using **matlab**,
the scenario
random data
**hamming**(7,4), (15,11), (31,26) **code**r
qpsk modulator
awgn channel
qpsk demodulator
**hamming**(7,4), (15,11), (31,26) De**code**r
I confused with (...)

Digital communication :: 30.10.2010 17:49 :: realbaltalyus :: Replies: **3** :: Views: **3043**

Hi,
formulas (4)-(5)-(6) gives you the procedure to obtain the coefficients of the FIR filter you need.
You must take into account that array indexes in **matlab** start from 1 instead of 0 like in the formulas.
**matlab** has built-in Gamma and Bessel functions, as well as **hamming** window.
You must have fd, ts and M. And, of course, you must have (...)

Digital Signal Processing :: 24.08.2011 18:52 :: zorro :: Replies: **7** :: Views: **465**

Hello , I'm new to **matlab** , and I wanna solve an assignment
the question is to generate 4 windows and compute their power spectral, then generate a 4-by-2 plot where the 1st column has windows plots in time domain and the other column for frequency domain ,
i wrote this **code** but i have few problems, I hope you can help, thanks in advance
%---

Digital Signal Processing :: 08.05.2012 13:02 :: Frogi :: Replies: **0** :: Views: **452**

You must to apply some checking **code**, as **hamming**, CRC, etc...
Here there are some examples with CRC coding :
+++

Digital communication :: 29.06.2012 20:55 :: andre_teprom :: Replies: **5** :: Views: **786**

The Iterative Solutions **code**d Modulation Library (ISCML) is an open source toolbox for simulating capacity approaching **code**s in **matlab**.
It has been developed by Matthew Valenti.
It is licensed as free software under the lesser GPL license.
The toolbox contains support for the followi

Software Links :: 18.02.2007 09:15 :: AARTHIREDDY :: Replies: **2** :: Views: **5286**

Hi All
I wish to plot various frequency responses it **matlab** all on the same plot.
I can plot them individually but not together, can anyone reccomend how to do this.
This is my **code**:
b=fir1(n,wn,rectwin(n+1),'noscale');
=freqz(b,a,512);
plot(w/pi,(abs(h);
i wish to plot the same responses but only for different windows. e.g co

Digital Signal Processing :: 25.03.2007 11:49 :: andrew257 :: Replies: **4** :: Views: **631**

I have plotted the spectrogram of linear FM signal using TFTB toolbox in **matlab**. Here is the **code**:
y=fmlin(128,0.1,0.3);
h=tftb_window(21,'**hamming**');
tfrsp(y,1:128,128,h,1);
My questions are:
How to find peak values of the spectrogram for every time instant (when you have mesh plot)?
How to plot a graph for a constant frequency, that (...)

Digital Signal Processing :: 04.03.2008 17:28 :: brano :: Replies: **1** :: Views: **788**

Hi everyone;
I have to design filter by using the window method without using 'fwind1' command of the **code** is:
%-----------------------------------------------------------------------------
= freqspace(21,'meshgrid');
Hd = ones(21);
r = sqrt(f1.^2 + f2.^2);
Hd((r<0.1)|(r>0.5)) = 0;%the desired bandpass response
colormap(

Digital Signal Processing :: 21.11.2008 15:32 :: cbecer2003 :: Replies: **1** :: Views: **740**

Hello folks,
I have one question regarding secure wireless transmission.
I am using 433 MHz RF communication for one of my project. I want to know how can i use error correction **code** for successful transmission of my data from Computer to Atmega8 (uC).
I am using **matlab** for data transmission. I can en**code** the data using the in (...)

RF, Microwave, Antennas and Optics :: 04.04.2009 23:28 :: tarang :: Replies: **0** :: Views: **733**

We have a course project to do the FEC 2/3 of Bluetooth in VHDL/**matlab**
I can find the syndrome vector after divisions but how I can build a lookup tables of syndromes to be able to correct to error bit.
it is a (15,10) **hamming** **code**, which can correct a single bit according to the specification

Digital communication :: 10.11.2009 16:39 :: godsosall :: Replies: **5** :: Views: **2889**

I done in **matlab** a routine to determine to the **hamming**(7,4,1) **code**, the amount of syndromes equal to Zero.
You could perform some few changes to fit to your **code**.
% Program to generate all the input error patterns from 0000000 to 1111111
% and then calculate corresponding syndromes
d = ;
h =[ ; [ 0

Electronic Elementary Questions :: 04.02.2012 20:38 :: andre_teprom :: Replies: **5** :: Views: **458**

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