Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. Engineers Canada national examination 16-Elec-A3 — Signals and Communications, December 2017. Closed book (approved Casio or Sharp calculator permitted), 3 hours, 4 pages. Five questions, all compulsory, all of equal value (20 marks each). All five are solved in full below, every sub-part answered.
Reference texts. B. P. Lathi & Z. Ding, Modern Digital and Analog Communication Systems, 5th ed. (AM modulation and detection, PCM quantisation, superheterodyne receivers); B. P. Lathi, Linear Systems and Signals, 2nd ed. (Fourier series, ideal filtering, signal power); A. V. Oppenheim & A. S. Willsky, Signals and Systems, 2nd ed. (LTI systems, z-transform, BIBO stability); J. G. Proakis & D. G. Manolakis, Digital Signal Processing, 4th ed. (difference equations, direct-form structures); S. Haykin, Communication Systems, 5th ed. (image rejection, envelope detection, companding).
