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Adaptive Subcarrier Allocation for Multi-User OFDM System

Kok Ann Donny TEO, Yoshiyuki OTANI, Shuichi OHNO

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Summary :

Orthogonal Frequency Division Multiple Access (OFDMA) allows multiple users to make use of the same bandwidth as the single-user OFDM for data transmission and is a promising candidate to be used for future cellular systems. A key issue at hand is the rate-adaptive resource allocation problem. In this paper, we propose two basic subcarrier allocation schemes with low complexities based on the magnitude of the channel frequency responses. The proposed algorithms ensure a fair resource allocation in terms of the number of subcarriers with affordable bit-rates. Through extensive discussions and Monte Carlo simulations, a comprehensive comparison with previously derived subcarrier allocation schemes is performed which depicts the pros and cons of our proposed algorithms.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.11 pp.3131-3137
Publication Date
2006/11/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.11.3131
Type of Manuscript
Special Section PAPER (Special Section on Wide Band Systems)
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