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Consider a binary data sequence 1111101111. Draw the waveforms for the given binary data sequence, using Bipolar AMI RZ and Manchester.
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$$ Binary \ Data \ Sequence - 1111101111$$


Bipolar AMI

  • It stands for Bipolar Alternate Mark Inversion (AMI).
  • In this type of encoding, BIT – 0 is represented by 0 Voltage line, and BIT – 1 is represented by alternate Positive and Negative Voltages.

Waveform for the Binary Data Sequence 1111101111 using the Bipolar-AMI:

Bipolar AMI 1111101111


Bipolar RZ

  • Bipolar RZ stands for Bipolar Return to Zero.
  • In this type of encoding, transition always occurs in the middle of the bit interval.
  • BIT – 0 is represented by a 0 Voltage line.
  • BIT – 1 is represented by alternate Positive and Negative Voltages.
  • But, transition always occurs in the middle of the bit interval.
  • If the transition is at the POSITIVE Voltage Side, then it starts at the POSITIVE side, makes the transition, and returns to the 0 Voltage side. (Z - Shape Pattern)
  • If the transition is at the NEGATIVE Voltage Side, then it starts at the NEGATIVE side, makes the transition, and returns to the 0 Voltage side. (Inverted Z - Shape Pattern)

Waveform for the Binary Data Sequence 1111101111 using the Bipolar RZ:

Bipolar RZ 1111101111


Manchester

  • Manchester combines the logic of RZ and NRZ-L encoding techniques.
  • It is used by IEEE 802.5
  • BIT - 0 represents the transition that starts at the POSITIVE side, makes the transition, and returns to the NEGATIVE side. (Z - Shape Pattern)
  • BIT - 1 represents the transition that starts at the NEGATIVE side, makes the transition, and returns to the POSITIVE side. (Inverted Z - Shape Pattern)

Waveform for the Binary Data Sequence 1111101111 using the Manchester:

Manchester 1111101111

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