Performance evaluation of multiuser selection scheme in HANs of smart grid

Abstract

In Home Area Networks (HANs) of Smart Grid with the promising WiFi Direct technique, multiuser selection scheme is employed to reduce the effects of fading at the receiver part of the smart meter. In this paper, the performance of multiuser selection scheme in HANs over indoor Saleh-Valenzuela (S-V) channel is evaluated from two aspects: outage probability and bit error rate (BER). The probability density function (PDF) of signal to noise ratio (SNR) of the selected user is derived from the amplitude distribution property of the indoor S-V channel. Considering the characteristic of Power Saving Mechanism in WiFi Direct networks, the closed-form outage probability are obtained. Numerical results show that the performance of multiuser selection scheme in HANs of Smart Grid is related with several factors, i.e. total number of devices in HANs, traffic intensity, and modulation scheme, etc. © 2014 Springer International Publishing Switzerland.