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________ uses directional antennas to control interference.

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________ uses directional antennas to control interference.

(a) Sectoring

(b) Cell splitting

(c) Repeaters

(d) Micro cell zone concept

The question was asked during an interview.

Enquiry is from Improving Coverage and Capacity in Cellular Systems topic in section The Cellular Concept – System Design Fundamentals of Wireless/Mobile

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The correct answer is (a) Sectoring

The explanation: Sectoring uses directional antenna to further control the interference and frequency reuse of channels. By decreasing the cell radius R and keeping the co-channel reuse ratio D/R unchanged, cell splitting increases the number of channels per unit area.

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