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Actual radio coverage of a cell is called __________

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Actual radio coverage of a cell is called __________

(a) Fingerprint

(b) Footprint

(c) Imprint

(d) Matrix

This question was addressed to me in an online interview.

This key question is from Frequency Reuse in chapter The Cellular Concept – System Design Fundamentals of Wireless/Mobile

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The correct choice is (b) Footprint

To explain I would say: Actual radio coverage of a cell is known as the footprint. It is determined from field measurements or propagation prediction models. Although the real footprint is amorphous in nature, a regular cell shape is needed for systematic system design.

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