Communication miscellaneous

Communication miscellaneous

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Communication

Communication miscellaneous
  1. Which of the following pulse systems requires higher bandwidth?








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    PPM system requires higher bandwidth.

    Correct Option: C

    PPM system requires higher bandwidth.

  1. If the lower sideband overlaps the basebands, the distortion is called—








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    If the lower sideband overlaps the basebands, the distortion is called Aliasing.

    Correct Option: C

    If the lower sideband overlaps the basebands, the distortion is called Aliasing.

  1. To permit the selection of 1 out of 16 equiprobable events, the number of bits required is—








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    No. of bits required = log2 16 = log2 24 = 4

    Correct Option: D

    No. of bits required = log2 16 = log2 24 = 4

  1. The Hartley law states that—








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    Hartley law states that the maximum rate of information transmission depends on the channel bandwidth.

    Correct Option: A

    Hartley law states that the maximum rate of information transmission depends on the channel bandwidth.

  1. A signalling system in which each letter of the alphabet is represented by a different symbol is not used because—








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    A signalling system in which each letter of the alphabet is represented by a different symbol is not used because noise would introduce too many errors.

    Correct Option: C

    A signalling system in which each letter of the alphabet is represented by a different symbol is not used because noise would introduce too many errors.