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Which of the following is not an outdoor propagation model?

(a) Longley-Rice model

(b) Ericson Multiple Breakpoint Model

(c) Hata model

(d) Okumura model

This question was addressed to me during an interview.

Question is from Outdoor Propagation Models topic in chapter Mobile Radio Propagation: Large – Scale Path Loss of Wireless/Mobile

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Correct option is (b) Ericson Multiple Breakpoint Model

Best explanation: Ericson multiple breakpoint model is an indoor propagation model. Longley-Rice, Hata and Okumura model are outdoor propagation models. Most of these models are based on a systematic interpretation of measurement data obtained in the service area.

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