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

Fingerprint

Subcarrier Allocation
Information Quality
Frequency division multiple access
Orthogonal Frequency Division multiple Access (OFDMA)
Feedback
Greedy Algorithm
Assignment
Bandwidth
Computational Complexity
Outages
Computational complexity
Signal to noise ratio

All Science Journal Classification (ASJC) codes

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

Cite this

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Simple dynamic subcarrier allocation with CQI feedback reduction for OFDMA systems. / Woo, Choongchae; Oh, Eunsung; Hong, Daesik.

In: IEEE Transactions on Vehicular Technology, Vol. 57, No. 5, 08.10.2008, p. 3299-3303.

Research output: Contribution to journalArticle

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