Novel Fairness Improved Radio Resource Management Schemes for Best-Effort Service in OFDMA Systems

Authors:
Yu Peng Wang;Kyung Hi Chang
Affiliations:
Research and Innovation Center, Alcatel-lucent Shanghai Bell Co. Ltd., Shanghai, China 201206;Electronic Engineering Department, Inha University, Incheon, Korea 402-751
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

In this paper, we propose a complete radio resource management procedure for best-effort service in OFDMA systems, which improves the system fairness with graceful throughput degradation compared to the upper bound of the system throughput. By the proposed bandwidth and power allocation algorithms, the user in the worst channel environment has almost the same probability of accessing the system as the user in the best channel environment. Furthermore, a novel sub-channel allocation algorithm is proposed to exploit frequency selectivity and multi-user diversity gains simultaneously in OFDMA systems, which is able to achieve the highest system throughput given each user's channel environment.