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Analysis of Radar Detection Probabilities in Time Division Duplexed Systems

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Executive Summary

Dynamic Frequency Selection (DFS) is the technology chosen by ETSI, FCC, and Industry Canada to provide unlicensed access for broadband radios in licensed bands. It may be viewed as a basic form of cognitive radio, where broadband radios share spectrum with radar users, and is implemented by the base station or base station/subscriber combination. This paper looks at the likelihood that a radar pulse burst can be detected in a Time-Division Duplexed (TDD) system with radar detection restricted to the base station. In such a system, a periodic 'quiet time' is enforced.

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