Channel state-aware joint dynamic cell coordination scheme using adaptive modulation and variable reuse factor in OFDMA downlink

Dae Wook Byun, Young Min Ki, Dong Ku Kim

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

Abstract

In this paper, two different dynamic cell coordination stratagies for frequency selective and flat fading are proposed for efficient subcarrier allocation in the joint consideration of adaptive modulation and variable frequency reuse in the channel-aware OFDMA downlink multicellular environment. Compared to a conventional OFDMA system without cell coordination, where system throughput may become degraded due to the persistent interference from other cells, the proposed system dynamically allows RNC to apply different reuse factors on each subchannel and scheduling in consideration of channel and interference conditions of individual users so as to increase the system throughput and guarantee QoS of each user. In a selective fading channel, the proposed schemes showed 2.6 times as large throughput as that of a single reuse factor of one for all subcarriers. In a frequency flat fading, the dynamic scheme with the proposed scheduling achieves on average three times larger throughput than the conventional dynamic scheme [8].

Original languageEnglish
Title of host publicationPersonal Wireless Communications - IFIP TC6 11th International Conference, PWC 2006, Proceedings
EditorsPedro Cuenca, Luiz Orozco-Barbosa
PublisherSpringer Verlag
Pages64-75
Number of pages12
ISBN (Print)3540451749, 9783540451747
DOIs
Publication statusPublished - 2006
EventIFIP TC6 11th International Conference on Personal Wireless Communications, PWC 2006 - Albacete, Spain
Duration: 2006 Sep 202006 Sep 22

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4217 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

OtherIFIP TC6 11th International Conference on Personal Wireless Communications, PWC 2006
CountrySpain
CityAlbacete
Period06/9/2006/9/22

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)

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