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Communication SystemsDigital Receivers

The main purpose of a matched filter in a digital receiver is to?

  • AMaximize output SNR at a specified sampling instant for a known signal in AWGN
  • BEliminate the need for synchronization
  • CMake all symbol waveforms identical
  • DGenerate carrier power
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Correct Answer: A. Maximize output SNR at a specified sampling instant for a known signal in AWGN
Explanation: For a known signal in additive white Gaussian noise, the matched filter maximizes the signal-to-noise ratio at the decision sampling instant.
Reference: Standard communication systems: digital receivers
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