Scaling Laws and Design Principles for Multi-Cellular Wireless OFDMA Systems

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Executive Summary

In this paper, the authors consider the downlink of large-scale multi-cellular OFDMA-based networks and study performance bounds of the system as a function of the number of users K, the number of base-stations B, and the number of resource blocks N. Here, a resource block is a collection of subcarriers such that all such collections that are disjoint have associated independently fading channels. They derive novel upper and lower bounds on the sum-utility for a general spatial geometry of base stations, a truncated path loss model, and a variety of fading models (Rayleigh, Nakagami-m, Weibull, and LogNormal).

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