Efficient adaptive transmission technique for coded multiuser OFDMA systems

Duho Rhee, Joong Hyung Kwon, Ilmu Byun, Kwang Soon Kim

Research output: Contribution to journalArticle

Abstract

In previous literature on adaptive transmission in multiuser OFDMA systems, only uncoded case or capacity (coded with infinite length of codeword) has been considered. In this paper, an adaptive transmission algorithm for coded OFDMA systems with practical codeword lengths is investigated. Also, in order to keep the feedback overhead within a practical range, a two-step partial CQI scheme is adopted, which has both better performance and reduced feedback overhead compared to conventional partial CQI schemes. By allowing a long codeword block across all allocated sub-bands with appropriate power and modulation order allocation rather than using short codeword blocks to each sub-band, high coding gain can be obtained, which leads to performance improvement.

Original languageEnglish
Pages (from-to)2168-2171
Number of pages4
JournalIEICE Transactions on Communications
VolumeE90-B
Issue number8
DOIs
Publication statusPublished - 2007 Aug

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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