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What is the minimum number of redundant bits that error-correcting code requires for data units that are 5 bits long?
4 bits
How can you determine the no of redundant bits in Hamming Code error correction technique?
Q.1 How can you determine the no. of redundant bits in Hamming Code error correction technique? Q.2 Compare line discipline methods ENQ/ACK and Poll/Select? Q.3 What the receiver wil receive if the check sum method is applied to the following bit? 10101001 00111001
What is the error correction mechanism?
Error correction mechanisms are techniques used in computer systems to detect and correct errors that may occur during data transmission or storage. These mechanisms typically involve adding redundant bits to the data to enable error detection and correction. Common error correction techniques include parity checks, checksums, and cyclic redundancy checks (CRC).
Whai is the difference between CRC and hamming code?
In CRC, the redundant bits are derived from binary division to the data unit. While in hamming code, the redundant bits are a function of length of the data bits.
Advantage of error detection and correction?
To be able to detect or correct errors, we need to send some extra bits with our data. These redundant bits are added by the sender and removed by the receiver. Their presence allows the receiver to detect or correct corrupted bits
What is multi channel?
basically in channel encoding we used to add redundant bit(additional bits) into the transmitting signal so to make it robust against the errors that may be occur during its transmission and receiver these error can be detected and corrected when this signal is passed through channel decoder
What is channel encoder?
basically in channel encoding we used to add redundant bit(additional bits) into the transmitting signal so to make it robust against the errors that may be occur during its transmission and receiver these error can be detected and corrected when this signal is passed through channel decoder
What is Multi- channel Encoder?
basically in channel encoding we used to add redundant bit(additional bits) into the transmitting signal so to make it robust against the errors that may be occur during its transmission and receiver these error can be detected and corrected when this signal is passed through channel decoder
What type of transmission do burst errors occur?
In burst error, it is not necessary that only consecutive bits are changed. The length of burst error is measured from first changed bit to last changed bit. As shown in fig. length of burst error is 8, although some bits are unchanged in between. Burst error is most likely to occur in a serial transmission. The noise occurring for a longer duration affects multiple bits. The number of bits affected depends on the data rate & duration of noise. For e.g. if data rate is 1 kbps, a noise of 1/100 second can affect 10 bits.
How Redundancy related to error detection and correction?
The central concept in detecting or correcting errors is redundancy. To be able to detect or correct errors, we need to send some extra bits with our data. These redundant bits are added by the sender and removed by the receiver. Their presence allows the receiver to detect or correct corrupted bits.
If two bits of a byte are in error?
If two bits of a byte are in error when the byte is read from ECC memory, ECC can detect the error.
If two bits of a byte are in error when the byte is read from ECC memory can ECC detect the error Can it fix the error?
ECC can detect the error but cannot correct it.
