NETp1-13: Studies in Downlink Spectral Efficiency of OFDMA Networks with MIMO and Opportunistic Scheduling

Abstract

In this paper we study the downlink spectral efficiency of a wireless network using Orthogonal Frequency Division Multiple Access (OFDMA), Multiple Input Multiple Output (MIMO) antenna systems and Opportunistic Scheduling (OS) techniques. The main purpose of the study is to understand how these techniques interact and influence the spectral efficiency of the network for different antenna configurations and scheduling policies given the coherence bandwidth of the channel and mobile speed. We will use the point-to-point link Shannon outage capacity as the underlying metric for evaluating the overall throughput of the network. The results illustrate the relationships between the different techniques. 1 The effect of channel estimation errors on the performance of the system will be studied at at later date. © 1-4244-0357-X/06/$20.00 2006 IEEE This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE GLOBECOM 2006 proceedings. © 1-4244-0357-X/06/$20.00 2006 IEEE This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE GLOBECOM 2006 proceedings.