 |
Center for Nonlinear Studies |
In this talk, we present recent results in the design and performance evaluation of scheduling algorithms for multi-channel OFDM wireless systems. OFDM wireless systems are of increasing interest, and 4G cellular systems (such as LTE and WiMax) are based on this technology. We first introduce the classical MaxWeight algorithm (proposed by Tassiulas and Ephremides) and discuss its throughput-optimality (stability) properties. We then proceed to show that this algorithm can result in poor delay performance in emerging multi-cahhnel OFDM wireless systems. Our main contributions that we present in this talk are a new class of iterative scheduling algorithms for multi-channel wireless networks, where one can achieve both throughput optimality as well as small delay performance. (Based on joint work with Shreeshankar Bodas, Lei Ying and R. Srikant)
Host: Misha