Code:
clc;
clear all;
close all;
n=input('enter the code digits');
k=input('enter the data digits');
p=input('enter the parity
matrix it must bei k rows and m coloums'); disp(p)
z=input('enter 1 for systmetic
and 0 for nonsystmetic');
msg=[];
for i=0:2^k-1
msg=[msg;de2bi(i,k,'left-msb')];
end
if z==1
%p=[1 0 1;0 1 1;1 1 0];
i=eye([k k])
g=[i p]
else
g=input('enter the generator matrix in k*n ');
end
code =rem(msg*g,2)
decmsg=decode(code ,n,k,'l...
Matlab Code to Find syndrome for each possible error vector & prepare a suitable decoding table for (n,k) systematic linear block code.
Code:
clc;
clear all;
close all;
n=input('enter the code digits');
k=input('enter the data digits');
i=eye([k k])
d = de2bi(0:2^k-1,3,'left-msb');
a = input('to generate systematic
code press 1 or any other to generate non systematic code: ');
if(a ==1 )
sprintf('enter parity matrix of
size %dX%d',k,n-k)
p =input('parity matrix: ');
g=[i p];
h=[p i];
c=rem(d*g,2)
else
sprintf('enter generator matrix
of size %dX%d',k,n)
ns = input('generator matrix: ');
c1=rem(d*ns,2)
h=ns;
end...
Code to Determine all the codewords and minimum weights of (n,k) linear block code in matlab
Code:
clc;
clear all;
close all;
n=input('enter the code digits');
k=input('enter the data digits');
p=input('enter the parity
matrix it must bei k rows and m coloums'); disp(p)
z=input('enter 1 for systmetic
and 0 for nonsystmetic');
msg=[];
for i=0:2^k-1
msg=[msg;de2bi(i,k,'left-msb')];
end
if z==1
%p=[1 0 1;0 1 1;1 1 0];
i=eye([k k])
g=[i p]
else
g=input('enter the generator matrix in k*n ');
end
code =rem(msg*g,2)...
Code to Determine the error correcting capability of given (n,k) code using hamming bound in matlab
Code:
clc;
clear all;
close all;
n=input('enter the code bits :
n :');
k=input('enter the data bits :
k :');
m=n-k; disp(m);
z=2^m; disp (z);
i=0;
for j=0:1:n
sum=0;
for i=0:1:j
c=factorial(n)/(factorial(n-i)*factorial(i));
sum=sum+c;
end
if sum
>=z
j=j-1;
...
Code to Find entropy for the given set of probability using MATLAB
Code:
n=input('How many
messages are there? : ');
p=[ ];
for x= 1:n
sprintf('Enter the value of the message %d
''s probability',x)
p(x)=input('p = ');
end
entr=0;
if sum(p)==1
for x=1:n
entr=entr+p(x)*log(1/p(x));
end
else...
Matlab code for Computation of Linear convolution with DFT
Code:
clc;
clear
all;
g=input('Type
in the first sequence:');
h=input('Type
in the second sequence:');
ga=[g
zeros(1,length(h)-1)];
ha=[h
zeros(1,length(g)-1)];
G=fft(ga);
H=fft(ha);
Y=G.*H;
y=ifft(Y);
subplot
411; stem(g); title('First sequence');
subplot
412; stem(h); title('second sequence');
subplot
413; stem(y); title('New sequence');
subplot
414; plot(y); title('New sequence');
&nb...
Matlab code for Signal smoothing by moving- average Filter
Code:
clc
clear
all;
w=input('Enter window
size:');
fs=input('Enter sampling
freq:');
f=input('Enter freq:');
t=0:1/fs:1;
x=sin(2*pi*f*t);
e=0.5*randn(1,fs+1);
xe=x+e;
for n=1:fs-w
xblk=xe(1,n:n+w-1);
y(n)=(1/w)*sum(xblk);
end...
Generate the Complex exponential sequence with MATLAB
Code:
Normal
0
false
false
false
EN-US
X-NONE
X-NONE
MicrosoftInternetExplorer4
clc;
clear all;
a=input('Type in real exponent : ');
b=input('Type in complex exponent : ');
c=a+b*i;
k=input('Type in the gain constant : ');
N=input('Type in length of sequence : ');
n=1:N;
x=k*exp(c*n);
subplot(2,1,1)
stem(n-1,real(x));
xlabel('time...
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