A Throughput Enhancement under a Finite Buffer Capacity in OFDMA System

Soonchul PARK  Sungho HWANG  Ho-Shin CHO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.11   pp.3537-3540
Publication Date: 2009/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.3537
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
scheduling,  resource allocation,  proportional fairness,  finite queue,  

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Summary: 
In this paper, we propose a scheme of frequency sub-band allocation to obtain maximum throughput in an orthogonal frequency division multiple access (OFDMA) system where each user has a finite number of packets to transmit, which are generated from packet calls with arbitrary size and arbitrary arrival rate. The proposed scheme is evaluated in terms of throughput and user fairness in comparison with the proportional fairness (PF) scheme and the Greedy scheme under the finite queue length condition. Numerical results show that the proposed scheme is superior to the Greedy scheme in terms of both throughput and fairness for finite queue length.