Procedure

There are four tasks in this experiment.

Procedure for Encoding:

• The objective of this task is to encode a message into a codeword using generator matrix.
• First enter a binary message and click on Submit.
• The entered message will be displayed in Observations.
• Enter the encoded codeword corresponding to the message and click on submit.
• The correctness of the entered codeword is displayed in Observations.
• If the answer is correct, click on Reset to try these steps again with a different binary message.

Procedure for Codebook Generation:

• The objective of this task is to generate the entire codebook of a linear block code using the given generator matrix.
• Enter the codeword corresponding to the message and click on Submit.
• The correctness of the entered codeword is displayed in Observations.
• If the codeword entered is correct, enter the next codeword. Repeat this procedure until the entire codebook is generated.
• Reset - Resets the codeword and clears the Observations.

Procedure for Generator Matrix:

• The objective of this task is to find the generator matrix of a code from the given codebook.
• Initially, all the vectors are in grey color.
• Clicking on a vector changes its color from grey to green. Green background indicate that a vector is selected.
• To deselect a vector, click on it again. Its color changes back to grey.
• Select 3 codewords one by one to form the rows of the generator matrix and click on Submit.
• Observations section displays whether a valid generator matrix is selected or not.
• For systematic generator matrix, the order in which the codewords are selected is important.
• Reset - Deselects all the vectors and brings it back to the initial state.

Procedure for Parity-Check Matrix:

• The objective of this task is to find all the codewords of a code from the given parity-check matrix.
• Initially, all the vectors are in grey color.
• Clicking on a vector changes its color from grey to green. All the vectors with green background are the selected vectors.
• To deselect a vector, click on it again. Its color changes back to grey.
• Select all the vectors which are the codewords of the given code \(\mathcal{C}\) and click on Submit.
• Observations section displays whether all the codewords have been selected or not.