NDLI: Opportunistic sub-carrier allocation algorithm for soft frequency reuse in OFDMA systems

Content Provider	ACM Digital Library
Author	Choi, Bumkwi Lee, Tae-Jin
Abstract	Orthogonal frequency division multiple access (OFDMA) is a promising technique for high data rate communications in the future cellular systems. Since frequency resources are universally reused in every cell of a system, users located near the cell-edge might experience severe inter-cell interferences (ICIs). To increase the performance of the system, soft frequency reuse (SFR) with an adaptive sub-carrier allocation algorithm considering user's quality of service (QoS) requirement has been proposed. However, an appropriate scheduling mechanism after satisfying users' minimum required throughput needs to be provided. In this paper, we propose an opportunistic sub-carrier allocation algorithm for SFR (OSFR) that meets the minimum required throughput of users and allocates the remaining sub-carriers to the candidate users who have the best channel conditions to enhance the overall network throughput. The performance of the proposed OSFR is investigated via simulations. Simulation results show that the proposed OSFR improves throughput as well as the outage performance.
Starting Page	1
Ending Page	5
Page Count	5
File Format	PDF
ISBN	9781450305716
DOI	10.1145/1968613.1968628
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-02-21
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Ofdma Soft frequency reuse Sub-carrier allocation
Content Type	Text
Resource Type	Article

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Opportunistic sub-carrier allocation algorithm for soft frequency reuse in OFDMA systems