Consider the (6,2) code generated by the matrix 11010 01101 G = -11 (a) Calculate and list all of the codewords c = mG for this code, together with the Ham- ming weight for each codeword by filling in a table in the form given below. wH (c) m с (b) What is the minimum distance for this code? How many bit errors can this code cor- rect? (c) Tabulate that part of the standard array to correct all single bit errors for this code. Indicate the value of the syndrome for each row. r 110111 110010 101001 000001 (d) Assume the following values of r have been received. Calculate the corresponding c and m for each of the values of r below. с m

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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### Understanding Linear Block Codes

**Consider the (6, 2) code generated by the matrix**

\[ G = \begin{bmatrix}
1 & 1 & 1 & 0 & 1 & 0 \\
1 & 0 & 1 & 1 & 0 & 1 
\end{bmatrix} \]

**Steps to Compute Various Parameters and Correct Errors:**

**(a) Calculate and list all of the codewords \( c = mG \) for this code, together with the Hamming weight for each codeword by filling in a table in the form given below.**

|   m   |      c      | \( w_H(c) \) |
|-------|-------------|--------------|
|       |             |              |

**(b) What is the minimum distance for this code? How many bit errors can this code correct?**

**(c) Tabulate that part of the standard array to correct all single bit errors for this code. Indicate the value of the syndrome for each row.**

**(d) Assume the following values of \( r \) have been received. Calculate the corresponding \( c \) and \( m \) for each of the values of \( r \) below.**

|      r      |      c      |  m  |
|-------------|-------------|-----|
|  110111     |             |     |
|  110010     |             |     |
|  101001     |             |     |
|  000001     |             |     |

**Explanation:**

1. **Code Matrix (G):** This matrix is used to generate the codewords. Each codeword is a linear combination of the rows of matrix \( G \).

2. **Part (a):** You must calculate the codewords by multiplying each possible message vector \( m \) by the generator matrix \( G \) and then count the Hamming weight \( w_H(c) \) for that codeword.

3. **Part (b):** The minimum distance of the code \( d_{min} \) is the smallest Hamming distance between any pair of distinct codewords. The code can correct up to \( \left\lfloor \frac{d_{min} - 1}{2} \right\rfloor \) bit errors.

4. **Part (c):** A standard array is a way to systematically list
Transcribed Image Text:### Understanding Linear Block Codes **Consider the (6, 2) code generated by the matrix** \[ G = \begin{bmatrix} 1 & 1 & 1 & 0 & 1 & 0 \\ 1 & 0 & 1 & 1 & 0 & 1 \end{bmatrix} \] **Steps to Compute Various Parameters and Correct Errors:** **(a) Calculate and list all of the codewords \( c = mG \) for this code, together with the Hamming weight for each codeword by filling in a table in the form given below.** | m | c | \( w_H(c) \) | |-------|-------------|--------------| | | | | **(b) What is the minimum distance for this code? How many bit errors can this code correct?** **(c) Tabulate that part of the standard array to correct all single bit errors for this code. Indicate the value of the syndrome for each row.** **(d) Assume the following values of \( r \) have been received. Calculate the corresponding \( c \) and \( m \) for each of the values of \( r \) below.** | r | c | m | |-------------|-------------|-----| | 110111 | | | | 110010 | | | | 101001 | | | | 000001 | | | **Explanation:** 1. **Code Matrix (G):** This matrix is used to generate the codewords. Each codeword is a linear combination of the rows of matrix \( G \). 2. **Part (a):** You must calculate the codewords by multiplying each possible message vector \( m \) by the generator matrix \( G \) and then count the Hamming weight \( w_H(c) \) for that codeword. 3. **Part (b):** The minimum distance of the code \( d_{min} \) is the smallest Hamming distance between any pair of distinct codewords. The code can correct up to \( \left\lfloor \frac{d_{min} - 1}{2} \right\rfloor \) bit errors. 4. **Part (c):** A standard array is a way to systematically list
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