A Selection Diversity Scheme for Bluetooth Coverage Extension

This paper investigates the impact of a selection diversity (SD) receiver on the performance of Bluetooth (BT) packet transmission in wireless channels with fast fading and shadowing. The adoption of this technique results in a coverage extension evaluated in the paper. We firstly derive a tight parametric exponential approximation for the instantaneous bit error probability (BEP) in additive white Gaussian noise; then, from this expression, we derive the mean block error probability (BLEP) for DH packets transmission in Rayleigh fading channel by adopting a simple selection diversity scheme. In particular, the impact of the diversity order on the BLEP is shown. We also obtain a tight and invertible bound on the BLEP that enable us to analytically evaluate also the quality of service expressed in terms of outage probability in channel affected by fading and shadowing and, as a consequence, the impact of multiple antennas on the system coverage.