The Economical Tradeoffs of Spectral Efficiency in OFDMA Cellular Systems.

This paper provides the economical tradeoffs for supporting multiple services over an OFDMA cellular network. These tradeoffs are related to two conflicting goals: (1) maximizing coverage so as to lower the system cost; and (2) maximizing the number of end users so as to maximize revenues. This problem is formulated in terms of coverage spectral efficiency, which directly determines the system capacity. We will analyze how the coverage geometry and the service requirements affect the coverage spectral efficiency, which determines the revenue generation. This paper also shows how the channel impairments (shadow fading, fast fading, and co-channel inference) affect the economics of the OFDMA system. [ABSTRACT FROM AUTHOR]