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22-Elec-A3 Signals and Communications: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 First-Order RC Low-Pass Filter Driven by a Square Wave
  2. Question 2 Discrete-Time LTI System — Convolution, Structure and Stability
  3. Question 3 DSB and AM Modulation of a Two-Tone Message
  4. Question 4 Non-Uniform PCM Quantizer Design for a Voice Signal
  5. Question 5 Angle-Modulated Signal — Message Recovery, Deviation and Bandwidth

Start with Question 1 →

Paper format. Professional Engineers Ontario / Engineers Canada national examination 16-Elec-A3 — Signals and Communications, May 2017. Closed book (one non-programmable calculator permitted), 3 hours, 4 pages. Five questions, all compulsory, all of equal value (20 marks each). All five are solved in full below.

Reference texts. B. P. Lathi & Z. Ding, Modern Digital and Analog Communication Systems, 5th ed. (AM/DSB power and efficiency, PCM, FM/Carson); B. P. Lathi, Linear Systems and Signals, 2nd ed. (Fourier series, filtering, average power); A. V. Oppenheim & A. S. Willsky, Signals and Systems, 2nd ed. (LTI convolution, BIBO stability); J. G. Proakis & D. G. Manolakis, Digital Signal Processing, 4th ed. (FIR structures, transfer functions); C. K. Alexander & M. N. O. Sadiku, Fundamentals of Electric Circuits, 7th ed. (first-order RC response).