Multiuser Scheduling on the Downlink of an LTE Cellular System

Research Letters in Communications. 2008;2008 DOI 10.1155/2008/323048

 

Journal Homepage

Journal Title: Research Letters in Communications

ISSN: 1687-6741 (Print); 1687-675X (Online)

Publisher: Hindawi Publishing Corporation

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Electronics: Computer engineering. Computer hardware

 

AUTHORS

Raymond Kwan (Centre for Wireless Network Design, University of Bedfordshire, Park Square, Luton, LU1 3JU, UK)
Cyril Leung (Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, V6T 1Z4, Canada)
Jie Zhang (Centre for Wireless Network Design, University of Bedfordshire, Park Square, Luton, LU1 3JU, UK)

EDITORIAL INFORMATION

 

Abstract | Full Text

The challenge of scheduling user transmissions on the downlink of a long-term evolution (LTE) cellular communication system is addressed. In particular, a novel optimalmultiuser scheduler is proposed. Numerical results show that the system performance improves with increasing correlation among OFDMA subcarriers. It is found that only a limited amount of feedback information is needed to achieve relatively good performance. A suboptimal reduced-complexity scheduler is also proposed and shown to provide good performance. The suboptimal scheme is especially attractive when the number of users is large, in which case the complexity of the optimal scheme is high.