User scheduling for the broadcast channel using a sum-rate threshold

Malcolm Egan*, Iain B. Collings, Wei Ni, Chang Kyung Sung

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

2 Citations (Scopus)

Abstract

In this paper, we present a novel user selection scheme for the broadcast channel (BC) using zero-forcing (ZF) precoding with optimal power control. Our scheme is based on a threshold that sets a minimum acceptable sum-rate. In order to design the threshold, we develop a new approximation of the sum-rate and derive simple design rules for the threshold with complexity constraints. We also extend the scheme so that users with differing quality of service (QoS) demands can be accommodated. Simulations show our scheme performs close to the exhaustive search algorithm, but with significantly reduced complexity. Moreover, it significantly reduces the outages compared to non-threshold based low complexity scheduling schemes.

Original languageEnglish
Title of host publication2011 IEEE International Conference on Communications (ICC 2011)
Place of PublicationPistcataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781612842332, 9781612842318
ISBN (Print)9781612842325
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, Japan
Duration: 5 Jun 20119 Jun 2011

Publication series

NameInternational Conference on Communications: Proceedings
PublisherIEEE
ISSN (Print)1550-3607
ISSN (Electronic)1938-1883

Other

Other2011 IEEE International Conference on Communications, ICC 2011
CountryJapan
CityKyoto
Period5/06/119/06/11

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  • Cite this

    Egan, M., Collings, I. B., Ni, W., & Sung, C. K. (2011). User scheduling for the broadcast channel using a sum-rate threshold. In 2011 IEEE International Conference on Communications (ICC 2011) (International Conference on Communications: Proceedings). Pistcataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/icc.2011.5963488