Question: The received 7 5 message block shown below uses odd parity checks, with the parity bits displayed at the end of each row (AE) and
The received 7 5 message block shown below uses odd parity checks, with the parity bits displayed at the end of each row (AE) and column (17) in the shaded cells (see Section 3.7.1). A single bit error has occurred somewhere in this message block. By checking each row and column, determine the following:
i.The row-column grid reference of the bit error.
ii.What change needs to be made to correct the error?
As part of your answer, briefly explain how you located the bit error.
|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|
| A | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| B | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
| C | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
| D | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
| E | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
|
| 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 |
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