Cellular Mobile Communication (EC-703 (A)) - Important Questions

Discuss the desired carrier-to-interference ratio (C/I) in an omni-directional antenna system and explain different ways to achieve the required conditions.

Discuss about the basic principle operation of cellular systems.

Explain the principle of mobile signal propagation over water and flat open area, including general formula and challenges in maintaining cell coverage.

Calculate the change in received signal power in dB when the receiver distance is doubled in mobile radio propagation.

Explain the gain and pattern relationship of cell-site antennas and classify the patterns.

Explain the principle of mobile to mobile propagation.

Design a system to serve a predefined area that experiences co-channel interference.

Explain the different effects on coverage and interference by applying power decrease, antenna height decrease and beam tilting.

Derive and explain the dropped call / dropped cell rate formula and its evaluation.

Explain the fixed channel assignment algorithm.

Classify handoff based on nature of handoff and explain.

Explain the architecture and working/features of the GSM system.

Explain call processing and handoff procedure in CDMA system.

Write short notes on any four of the following: (a) TDD systems (b) Cordless phone (c) PDC (d) PCN/PCS (e) Layer modelling in GSM (f) Umbrella pattern effect.