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Outage throughput maximization for OFDMA systems with feedback channel capacity constraints

  • Chen Chen
  • , Lin Bai*
  • , Bo Wu
  • , Duc To
  • , Jinho Choi
  • *Corresponding author for this work
  • Peking University
  • Swansea University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We investigate the maximum outage throughput for Orthogonal Frequency Division Multiple Access (OFDMA) systems in the presence of feedback channel capacity constraints. We attempt to establish an information-theoretic lower bound on the capacity of feedback channel and build the corresponding test channel that achieves this lower bound. Based on the derived test channel, we formulate the outage throughput maximization problem with the quantized CSI. Since the optimal solutions require an exponential time complexity, we propose a low complexity suboptimal approach that separately performs subcarrier and power allocation. Numerical results show that the proposed suboptimal approach can achieve a near optimal performance, and the outage throughput with a limited feedback of CSI can be close to that with perfect CSI by exploiting correlation properties of downlink CSI for quantization.

Original languageEnglish
Title of host publication2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781424456383
DOIs
StatePublished - 2010
Externally publishedYes
Event53rd IEEE Global Communications Conference, GLOBECOM 2010 - Miami, United States
Duration: 6 Dec 201010 Dec 2010

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Conference

Conference53rd IEEE Global Communications Conference, GLOBECOM 2010
Country/TerritoryUnited States
CityMiami
Period6/12/1010/12/10

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