Optimal threshold for throughput and optimal threshold for capacity in one-bit feedback scheduler

Abstract

In this paper, we consider a wireless network consisting of a BS (Base Station) and MSs (Mobile Stations) where the BS employs the one-bit feedback quantized proportional fair scheduler for downlink transmission. We then examine the effect of the threshold value in the scheduler on the throughput and that on the information theoretic capacity. Numerical results exhibit that the characteristics of the throughput with the change of the threshold value are greatly different from the characteristics of the information theoretic capacity with the change of the threshold value. Numerical results also show that if we use the optimal threshold for capacity as a substitute of the optimal threshold for throughput, the throughput performance can be considerably degraded.