EEC 402 Analog and Digital Communications Exam 2022

About this paper

EEC 402: A 3-page Second-Semester Examination for Analog and Digital Communications (EEC402) at the University of Buea College of Technology, June 2022, taught by Achiri and Nchetue. Question 1 covers line coding PSD derivation for bipolar (AMI) signaling, spectrum/bandwidth comparison of pulse shapes, comparison of on-off/polar/bipolar signaling, Nyquist pulse roll-off and maximum binary rate calculations. Question 2 covers bandwidth and Nyquist sampling-rate analysis of a sinc-squared signal at three different sampling rates. Question 3 covers full-duplex ASK/FSK channel allocation, BPSK transmitter design, minimum-distance/error-probability comparison of BPSK/ASK/FSK, and 8-QAM constellation design. Question 4 covers PCM sampling/quantization/bit-rate/bandwidth calculations, companded-PCM SNR trade-offs, and regenerative versus analog repeater performance over a long-haul digital link.