A new full-band feedback scheme using the adaptive grouping method in OFDMA systems

Woohyun Seo, Myeon Gyun Cho, Takki Yu, Daesik Hong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Opportunistic scheduling algorithms with link adaptation can increase system throughput, but have the drawback of requiring the channel quality information (CQI) to be transmitted from all the candidate users. In order to alleviate this problem, we propose a new feedback reduction scheme that preserves CQIs over all channels. The proposed scheme binds similar CQIs in groups to represent them more effectively, and uses a simple method for fast grouping. Simulation results show that the proposed scheme with this simple grouping achieves close to perfect feedback performance with respect to the original CQIs under reasonable feedback loads.

Original languageEnglish
Article number4543044
Pages (from-to)1982-1986
Number of pages5
JournalIEEE Transactions on Wireless Communications
Volume7
Issue number6
DOIs
Publication statusPublished - 2008 Jun 1

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All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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