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The authors investigate the Proportional Fair Scheduling (PFS) algorithm, with the objective of obtaining an analytic expression for it. In this paper, they derive a closed-form expression for the throughput of PFS in wireless networks. The theoretical results from analysis are compared with those from simulations. The analytic model is shown to provide a high accuracy in evaluating the throughput of the PFS algorithm in Rayleigh fading environment. Works have shown that the scheduling policy can significantly affect system performances such as throughput, delay, jitter, fairness and loss rate in wired and wireless networks.
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