Digital Communications Important Questions – DC Imp Qusts

Digital Communications Important Questions Pdf file – DC Imp Qusts

Please find the attached pdf file of Digital Communications Important Questions Bank – DC Imp Qusts

Link – DC Question Bank

UNIT-I

Pulse Code Modulation

  1. Summarize differential encoding signaling?
  2. Define quantization in PCM?
  3. Explain a simple model of nonuni form qunatizer.

For more questions please download the above Pdf file

Unit-II

Digital Modulation Techniques

  1. Construct the ASK and FSK waveforms for 011011.
  2. Sketch the block diagram of ASK generation.
  3. Examine how does pulse shaping reduce inter symbol interference?

For more questions please download the above Pdf file

Unit-III

Base Band Transmission and Optimal Reception of Digital Signal

  1. What is a matched filter?
  2. List two applications for eye pattern.
  3. What are eye pattern?

For more questions please download the above Pdf file

Unit-IV

Linear Block Codes & Cyclic Codes

  1. What is linear code?
  2. Discuss code rate?
  3. Define code efficiency.

For more questions please download the above Pdf file

Unit-IV

Convolutional Codes

  1. What is constraint length of convolution code.
  2. List advantages of convolutional codes
  3. Discuss the difference between convolutional code and block code.

For more questions please download the above Pdf file

Unit-V

Spread Spectrum Modulation

  1. Define spread spectrum communication
  2. Explains pseudo noise sequence?
  3. Discuss direct sequence spread spectrum modulation

For more questions please download the above Pdf file

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