Performance Analysis of Scheduling-Based Systems in Rayleigh Fading Channels

Scheduling is a widely used technique in recent wireless communication systems to utilize radio resource efficiently and adaptively according to varying radio channel conditions. In this paper, scheduling-based systems in Rayleigh fading channels are analyzed mathematically. First, a scheduling-based system and signal models are described. Then, the signal-to-noise ratio (SNR) distribution is formulated and the joint distribution of SNR, distance, and selected user is also derived. Using the derived joint distribution, we evaluate the selection probability and the distribution of selected users´ SNR values. Finally, system capacity is evaluated from the derived formulation. The analysis results and evaluated performance show that a multiuser diversity gain increases the system capacity and the scheduling-based systems take advantage of radio fading channel variation efficiently