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Communication SystemsDigital Receivers

Intersymbol interference (ISI) occurs when?

  • AOne transmitted symbol interferes with neighboring symbols
  • BNoise power becomes exactly zero
  • COnly one symbol is transmitted
  • DCarrier frequency equals zero
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Correct Answer: A. One transmitted symbol interferes with neighboring symbols
Explanation: Channel dispersion or bandwidth limitations can spread pulses so that adjacent symbol intervals overlap, causing ISI.
Reference: Standard communication systems: digital receivers
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