Carrier Sense Multiple Access With Collision Detection

Carrier sense multiple access with collision detection (CSMA/CD) is a Media Access Control method in which:

  • a carrier sensing scheme is used.
  • a transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam signal, and then waits for a random time interval before trying to resend the frame.

CSMA/CD is a modification of pure carrier sense multiple access (CSMA). CSMA/CD is used to improve CSMA performance by terminating transmission as soon as a collision is detected, thus shortening the time required before a retry can be attempted.

Read more about Carrier Sense Multiple Access With Collision Detection:  Algorithm, Jam Signal, Applications

Famous quotes containing the words carrier, sense, multiple, access and/or collision:

    It is the corpse of the bourgeoisie that separates us. With us, it is that class that is the carrier of the chromosome of banality.
    Jean Baudrillard (b. 1929)

    ... I was crying partly because I felt that this was expected of me, partly from genuine repentance, but partly also because of a deeper grief which is peculiar to childhood and not easy to convey: a sense of desolate loneliness and helplessness, of being locked up not only in a hostile world but in a world of good and evil where the rules were such that it was actually not possible for me to keep them.
    George Orwell (1903–1950)

    Combining paid employment with marriage and motherhood creates safeguards for emotional well-being. Nothing is certain in life, but generally the chances of happiness are greater if one has multiple areas of interest and involvement. To juggle is to diminish the risk of depression, anxiety, and unhappiness.
    Faye J. Crosby (20th century)

    Knowledge in the form of an informational commodity indispensable to productive power is already, and will continue to be, a major—perhaps the major—stake in the worldwide competition for power. It is conceivable that the nation-states will one day fight for control of information, just as they battled in the past for control over territory, and afterwards for control over access to and exploitation of raw materials and cheap labor.
    Jean François Lyotard (b. 1924)

    I know my fate. One day my name will be tied to the memory of something monstrous—a crisis without equal on earth, the most profound collision of conscience, a decision invoked against everything that had previously been believed, demanded, sanctified. I am no man, I am dynamite!
    Friedrich Nietzsche (1844–1900)