Data communication Terminology


Data Communication Terminologies
There are several common terminologies used in data communication literature:
Channel: The word channel refers to the portion of a link that carries a transmission between a given pair of lines. One link can have many (n) channels.
Data Rate: The data rate defines the number data elements (bits) sent in 1 second. The unit is bits per second (bps).
Signal Rate: The signal rate is the numbers of signal elements sent in 1 second. The unit is baud.
The data rate is sometimes called the bit rate: the signal rate is sometimes called the pulse rate, the modulation rate, or the baud rate.
One goal in data communications is to increase the data rate while decreasing the signal rate. Increasing the data rate increases the speed of transmission; deceasing the signal rate decreasing the bandwidth requirement.
Bandwidth: Bandwidth can be used in two different contexts with two different measuring values:-
Bandwidth in Hertz: Bandwidth in hertz is the range of frequencies contained in a composite signal or the range of frequencies a channel can pass.
Bandwidth in Bits per Second: The term bandwidth can also be referred as the number of bits per second that a channel, a link, or even a network can transmit.     

Comments

  1. AnonymousDecember 13, 2012 at 1:23 PM

    what is tx in data communication ?

    ReplyDelete
  2. UnknownApril 23, 2014 at 12:58 PM

    There are also
    PROTOCOL
    HEADER
    AND ENCAPSULATION in data communication terms.

    ReplyDelete
  3. UnknownMarch 27, 2019 at 2:32 AM

    Pls tell about brief explanation for communication and network concept

    ReplyDelete
  4. unknownJune 2, 2020 at 4:37 AM

    signals get weaker when distance between two devices expanded in a larger area.
    name the term used in data communication.

    ReplyDelete

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