Multiuser scheduling on the downlink of an LTE cellular system

Authors:
Raymond Kwan;Cyril Leung;Jie Zhang
Affiliations:
Centre for Wireless Network Design, University of Bedfordshire, Luton, UK;Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, Canada;Centre for Wireless Network Design, University of Bedfordshire, Luton, UK
Venue:
Research Letters in Communications - Regular issue
Year:
2008

Citing 4
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Abstract

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.