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Multiuser Resource Allocation Scheme Considering Link Layer Effective Capacity in OFDMA Systems  

Sung Si-Hwan (SK텔레시스 RF개발팀)
Yoo Myung-Sik (숭실대학교 정보통신전자공학부)
Shin Yo-An (숭실대학교 정보통신전자공학부)
Lee Won-Cheol (숭실대학교 정보통신전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.6B, 2006 , pp. 508-516 More about this Journal
Abstract
The explosive growth of wireless network users and the existence of various wireless services have demanded high rate throughput as well as user's QoS guarantees. Towards this, this paper proposes QoS-oriented subcarrier allocation scheme considering the QoS provisioning of multiple users, which is major requirement for wireless network design point of view. This paper introduces joint RR/K&H combined with M-LWDF(Modified Largest Weighted Delay First) scheme throughout observing statistical channel behavior and real time queuing analysis for appropriate resource allocation tightly connected to multiuser scheduling. Accordingly, the system throughput can be enhanced, and the QoS demanded for delay sensitive services can be satisfied. Furthermore, the proposed scheme is applied for OFDMA(Orthogonal Frequency Division Multiple Access) systems to allocate sub-carriers in optimal way. The simulation results verify plausible performances of proposed resource allocation scheme via showing superior effective capacity under time-varying physical-layer channel behaviors.
Keywords
Multiuser Diversity; TDMA; OFDMA; Resource Allocation; Scheduling;
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