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This paper presents a novel approach for setting the thresholds for Busy Burst (BB) enabled interference avoidance in TDD (Time Division Duplex) systems. One of the key issues in the BB concept is the appropriate choice of the threshold, which determines whether a user is allowed to transmit on a specific time-frequency resource unit. For a two-link network the authors derive the optimum threshold value that maximises the sum rate. Furthermore, for multiple links, a new heuristic threshold that only relies on locally available information is derived. It is demonstrated via simulations that the heuristic threshold provides superior sum rate than a fixed system-wide threshold.
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