EEC 433 Radio Engineering Exam 2026

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EEC 433: First Semester Examination for EEC433, Radio engineering, University of Buea, Course Master Dr Eric DEUSSOM, February 2025/2026, 2 hours. Exercise 1 (30+20 marks): LTE network planning at 1850MHz for Kumba town -- computing resource blocks and subcarrier count for a 20MHz carrier, subcarrier transmit power in dBm, UE power conversion, the COST231-Hata path-loss formula reduced to L=A+10n*log(d), the downlink and uplink link-budget equations and whether they are balanced, the coverage radius as a function of antenna-gain parameter alpha, its value at alpha=0, and the number of 3-sector BTS sites needed to cover Kumba's 56 km^2 area. Exercise 2 (20 marks) plus a 20-mark practical component: defining QoS, drive testing and its components, naming smartphone drive-test apps, the three ways of analyzing network QoS with their tools and indicators, radio optimization and its objectives, network densification techniques, and a step-by-step procedure for conducting and visualizing a drive test on the UB campus via Google Earth.