Simple dynamic subcarrier allocation with CQI feedback reduction for OFDMA systems

Choongchae Woo, Eunsung Oh, Daesik Hong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The focus of this paper is a proposal for a computationally efficient dynamic subcarrier allocation (DSA) algorithm for orthogonal frequency-division multiple access (OFDMA) systems. The proposed DSA algorithm considerably reduces the computational complexity and the amount of channel quality information (CQI) compared to amplitude-craving greedy (ACG) algorithms, which use full CQI. At the same time, the performance of the proposed algorithm closely approaches that achieved by ACG algorithms. Moreover, the authors present a new bandwidth-assignment algorithm produced by modifying bandwidth assignment based on the signal-to-noise ratio (BABS). This modified BABS algorithm enables the proposed DSA algorithm to produce a strong outage performance gain over the conventional scheme.

Original languageEnglish
Pages (from-to)3299-3303
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume57
Issue number5
DOIs
Publication statusPublished - 2008 Oct 8

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All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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