ASCII TO HAMMING CODE 7.4
4 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi I want to make converter from ASCII to hamming code 7.4. This is my code but output from this code is incorrect because when I compare it with the results from the online converter, the results do not match. Can you please tell me what is wrong with this code?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1302390/image.jpeg)
% Define the generator matrix for Hamming code 7.4
G = [1 0 0 0 1 1 0;
0 1 0 0 1 0 1;
0 0 1 0 1 1 1;
0 0 0 1 0 1 1];
% Ask the user to input a text message
msg = input("Enter a text message: ", 's');
% Convert the message to ASCII codes
asciiMsg = uint8(msg);
% Convert the ASCII codes to binary and concatenate them into a single vector
binaryMsg = dec2bin(asciiMsg, 8) - '0';
binaryMsg = binaryMsg.';
% Pad the binary message with zeros if its length is not a multiple of 4
numPaddingZeros = mod(-length(binaryMsg), 4);
binaryMsg = [zeros(1, numPaddingZeros), binaryMsg(:).'].';
% Reshape the binary message into 4-bit blocks
binaryMsg = reshape(binaryMsg, 4, []).';
% Encode each 4-bit block using Hamming code 7.4
encodedMsg = mod(binaryMsg * G, 2);
% Convert the encoded message to a string of characters
encodedMsgStr = num2str(encodedMsg(:).');
encodedMsgStr = strrep(encodedMsgStr, ' ', '');
encodedMsgStr = regexprep(encodedMsgStr, '[^\d]', '');
% Print the encoded message
disp("Encoded message: " + encodedMsgStr);
0 commentaires
Réponse acceptée
Voss
le 22 Fév 2023
Déplacé(e) : Voss
le 24 Fév 2023
I would check that you're putting the elements of encodedMsg in the right order here:
encodedMsgStr = num2str(encodedMsg(:).');
encodedMsgStr = strrep(encodedMsgStr, ' ', '');
encodedMsgStr = regexprep(encodedMsgStr, '[^\d]', '');
Maybe it should be something like:
encodedMsgStr = reshape(char(encodedMsg.'+'0'),1,[]);
2 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Hamming dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!