answersLogoWhite

0

How does crc work?

Updated: 11/6/2022
User Avatar

Wiki User

13y ago

Best Answer

A-CRC requirements

1-the sender and receiver agree upon a generator polynomial in advance, before transmission starts.

2-both the high and low bits of the generator must be 1

3-to compute checksum for a frame, the frame must be longer than the generator polynomial

B-CRC Steps

assume message=M(x)

generator polynomial=G(x)

degree of G(x)=R

1-Multiply M(x) by xR giving R zeros in the low order end of the frame

2-Divide the result of the 1st step by G(X), using modulo-2 division

3-Add the remainder of the 2nd step to M(x), thus placing up to R terms in the

R low-order positions

C-CRC Error Detecting capability

assume a generator polynomial of H Bits

1-all single bit errors

2-all double bit errors

3-all odd number of bit errors

4-all burst errors < H

5-most burst errors >=R

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How does crc work?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

When was Bushfire CRC created?

Bushfire CRC was created in 2003.


When was CRC Press created?

CRC Press was created in 1973.


When was Poultry CRC created?

Poultry CRC was created in 2003.


What is the full form of CRC?

CRC: Cyclical Redundancy CheckA term CRC is used in datalink protocols often used in transmission ..The CRC is computed while the packet is being transmitted and then incorporated in a trailer. Similarly, the receiver computes the CRC and compares it with the transmitted one. From both points of view, it is better to have the CRC in a trailer


When was CRC Churches International created?

CRC Churches International was created in 1945.


If a node receives a frame and the calculated crc does not mach the crc in the fcs what action will the nod take?

It will drop the frame


What is crc does not match?

CRC stands for 'cyclic reundancy check' its a common technique for declecting data trasmission errors.


Why is the crc important?

A CRC is used to check for integrity of some information, for example, a data packet. The CRC is calculated, according to some formula, from the remaining bytes in the packet, before sending the packet. The receiving end recalculates the CRC; if any of the bytes have become corrupted (say, through electrical noise during the transmission), the CRC will no longer match, and the receiver knows that the packet has been damaged.


What is CRC?

A Cyclic Redundancy Check is done as a first attempt to prevent corrupted data.


How does Ethernet handle error detection?

Each Ethernet frame contains a trailer with a cyclic redundancy check (CRC) of the frame contents. After reception of a frame, the receiving node creates a CRC from the bits in the frame to compare to the CRC value in the frame trailer. If these two CRC calculations match, the frame can be trusted as being received without error. The trusted frame will then be processed. A frame received with bad, nonmatching CRC's will be discarded.


What does CRC stand for in relation to CRC Industries?

"Corrosion Reaction Consultants" quote&gt;&gt; Later on he decided to create his own manufacturing company and on October 6, 1958, a company called Corrosion Reaction Consultants, Inc CRC was born.


What does the website CRC Press do?

CRC Press is an publisher and distributor of textbooks and catelogues for education. It primarily deals with textbooks in the science area of education.