A set of closed form approximate formulae for optimal sensing duration of cognitive radio

Abstract

In a cognitive radio system, proper configuration of sensing duration enables maximization of the data throughput. However, no existing straightforward formula is available, which is desirable in the mobile context due to tightness of computation time. A set of closed-form approximate formulae of optimal sensing duration for cognitive radio are derived under different signal to noise ratio (SNR). The approximation errors are perfectly small except within a certain SNR range, where the error is still less than 5%.