Adaptive Transmission with Mixed Band-AMC and Diversity Modes for Multiuser OFDMA

Sung Bo SIM  Yun Hee KIM  Kwang Soon KIM  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.9   pp.3021-3024
Publication Date: 2008/09/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.9.3021
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
OFDMA,  band-AMC,  diversity,  resource allocation,  

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In this letter, we propose an adaptive transmission method for an OFDMA system supporting both band-AMC and diversity modes in a frame, simultaneously. In the proposed method, users are classified into the two groups preferring the band-AMC mode or the diversity mode based on their channel parameters. Then the BS performs resource allocation to maximize the throughput. It is observed that the proposed adaptive transmission method can reduce the feedback overhead with negligible performance loss.