X = input('Enter x: '); %input vector X and H
H = input('Enter h: ') ;
LenX = length(X); %defining their lenghts
LenH = length(H);
y = zeros(1,LenX+LenH); %defing vector y of zeroes and of size
% lenth of X + length of H
t = zeros(1,LenH); % definign a vector t of same length as H
for i = 1:LenH+LenX-1 % Running a for loop from 1 to length of Y -1
if i<=LenX % till I IS Lesser then length of X i.e overlap about to begin
t(1)= X(i); % put x(i) on t(1) later it is shifted forwards in the vector t i.e. later t(2)=t(1)
H = input('Enter h: ') ;
LenX = length(X); %defining their lenghts
LenH = length(H);
y = zeros(1,LenX+LenH); %defing vector y of zeroes and of size
% lenth of X + length of H
t = zeros(1,LenH); % definign a vector t of same length as H
for i = 1:LenH+LenX-1 % Running a for loop from 1 to length of Y -1
if i<=LenX % till I IS Lesser then length of X i.e overlap about to begin
t(1)= X(i); % put x(i) on t(1) later it is shifted forwards in the vector t i.e. later t(2)=t(1)
- Matlab Code For Convolution
- C Program For Convolutional Code Matlab Pattern Free
- C Program For Convolutional Code Matlab Pattern Download
for j = 1:LenH % in the if condition a for loop from 1 to length of H
y(i) = y(i) + H(j)*t(j); % summing for all H(j)*t(j) and putting it at y(1) or y(2) or Y(i) in first iteration
% i.e. for i=1 only firt multiplication would
% be non zero rest all zeroes.
end
y(i) = y(i) + H(j)*t(j); % summing for all H(j)*t(j) and putting it at y(1) or y(2) or Y(i) in first iteration
% i.e. for i=1 only firt multiplication would
% be non zero rest all zeroes.
end
Concatenated Convolutional Codes Brett Werling M.S. Decoder written in Matlab »Matlab version known to be correct. Soft output Viterbi algorithm • For all bit widths tested, VHDL curve differs from Matlab curve.
for k = LenH:-1:2 % shifting old value of t(i) to t(i+1) now there would me 1+ non zeroes values in t
% this cycle would continue until i is lesser then
% length X i.e. overlap increasing every iteration less
% and less non zero vales in t every iteration
t(k) = t(k-1);
end
% this cycle would continue until i is lesser then
% length X i.e. overlap increasing every iteration less
% and less non zero vales in t every iteration
t(k) = t(k-1);
end
- Convolutional codes are channel codes, which are extensively used in communication systems like GSM (global system for mobile communications) and Interim standard IS-95. In next section we will use MATLAB capabilities to simulate convolutional encoding and Viterbi decoding 5.
- Convolutional Coding & Viterbi Algorithm Er Liu ([email protected]) Page 3 Convolutional Encoding Convolutional codes are applied in applications that require.
- 'Further results on High-Rate Punctured Convolutional Codes for Viterbi and Sequential Decoding,' IEEE Transactions on Communications, Vol. 11, November, 1990, p. 1923 MATLAB Command You clicked a link that corresponds to this MATLAB command.
else % now when all of the T is non zero which means 100% overlap in else overlap would start to decrease between T and H
% T is basically X
t(1)= 0;
for j = 1:LenH % Now we start filling up Zeroes in T i.e. overlap began to decrease now and each iteration it would decrease
% i.e T moving to left until there is no more
% over lap
y(i) = y(i) + (H(j)*t(j)); % in this for loop we multiply all respective vales of h and t and add the
% putting it at y(1) or y(2) or Y(i) in first iteration
end
% T is basically X
t(1)= 0;
for j = 1:LenH % Now we start filling up Zeroes in T i.e. overlap began to decrease now and each iteration it would decrease
% i.e T moving to left until there is no more
% over lap
y(i) = y(i) + (H(j)*t(j)); % in this for loop we multiply all respective vales of h and t and add the
% putting it at y(1) or y(2) or Y(i) in first iteration
end
for k = LenH:-1:2 %% here just like similar loop above t where we were filling up t with vales of x
%now we are filling up zeroos in t i.e. over lap decreasing
t(k) = t(k-1);
end
%now we are filling up zeroos in t i.e. over lap decreasing
t(k) = t(k-1);
end
end
end
ly=length(y)
indices=[ly]
for i=1:ly
indices(i)=i;
end
disp (y); %displays vector y.
indices=[ly]
for i=1:ly
indices(i)=i;
end
disp (y); %displays vector y.
Matlab Code For Convolution
disp (indices); % displays vector indices.
C Program For Convolutional Code Matlab Pattern Free
![C Program For Convolutional Code Matlab Pattern C Program For Convolutional Code Matlab Pattern](/uploads/1/2/6/0/126071696/969202772.jpg)
C Program For Convolutional Code Matlab Pattern Download
stem(y);
ylabel('Y[n]');
xlabel('[n]');
title('Convolution without conv function');
ylabel('Y[n]');
xlabel('[n]');
title('Convolution without conv function');