Error correction - retransmission, Computer Networking

When an error is discovered the receiver is able to ask the sender to retransmit the entire data unit

Error Correction-Forward Error Correction

  • A receiver is able to use an error-correcting code which automatically corrects certain errors
  • Single-bit errors
  • Is able to be detected by the addition of parity bit which helps to find "error" or "no error" which is sufficient to detect errors
  • To correct errors the receiver is able to simply invert 0 to 1 or 1 to 0 but the problem is "locating" the position of error
  • To do thus requires enough redundancy bits
  • Condition: 2r >= m + r + 1

 

Posted Date: 7/22/2013 2:00:19 AM | Location : United States







Related Discussions:- Error correction - retransmission, Assignment Help, Ask Question on Error correction - retransmission, Get Answer, Expert's Help, Error correction - retransmission Discussions

Write discussion on Error correction - retransmission
Your posts are moderated
Related Questions
Question: (a) Describe the importance of backups and the use of antivirus software. (b) With the help of an example/ illustration, explain the term encryption and explain

Functions and features of the IPMonitor program are as follows:   a)  This program should be able to list out detail information of IP traffic which includes source IP address an

Classification according to level of processing According to this categorization computer operations are classified like arithmetic operations and instruction execution. Subseq

INDEPENDENT Loops HPF gives additional opportunities for parallel implementation by using the INDEPENDENT directive to assert that the iterations of a do-loop can be done indep

what is end to end and host to host?

Q. Difficulties in Internetwork Communication? - Data arrive at interface f1 of s1 - How does s1 know that they must be sent out from interface f3? - There is no provisio

What is a File server? File servers are helpful for sharing files across a network. With a file server, the client passes requests for file records over system to file server.

Q. How is computer networks used in teleconferencing? Teleconferencing: Teleconferencing allows conference to happen without the participants being in the same place. Applica


A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the