A User-Differentiation-based Resource Allocation Scheme for OFDMA Downlink Systems

Yao-Hsing Chung, Chung-Ju Chang, Zhaoyang Zhang

Research output: Contribution to conferencePaper

5 Scopus citations

Abstract

This paper proposes a new user-differentiation-based resource allocation (UDRA) scheme for OFDMA downlink systems. The UDRA scheme can strike a good balance between quality-of-service (QoS) requirement guarantee and system throughput enhancement, whereas conventional schemes cannot explicitly and accurately control this tradeoff. The UDRA scheme first performs a utility-based resource allocation algorithm for urgent users to fulfill QoS requirement, then it performs a maximum-sum-rate resource allocation algorithm for regular users to enhance system throughput. To achieve the balance between QoS guarantee and throughput enhancement, the UDRA scheme further designs a fuzzy logic user identifier (FLUI) to intelligently differentiate users from urgent and regular. Simulation results show that the proposed UDRA scheme enhances the system throughput by 23.1%, 14.1%, and 9.7%, compared to the PSRA [1], ARRA [2], and U-TMCR [3] schemes, respectively, under a QoS requirement guarantee.
Original languageEnglish
DOIs
StatePublished - 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: 10 Jun 201215 Jun 2012

Conference

Conference2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period10/06/1215/06/12

Keywords

  • fuzzy logics
  • OFDMA downlink system
  • radio resource allocation
  • quality-of-service (QoS)

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    Chung, Y-H., Chang, C-J., & Zhang, Z. (2012). A User-Differentiation-based Resource Allocation Scheme for OFDMA Downlink Systems. Paper presented at 2012 IEEE International Conference on Communications, ICC 2012, Ottawa, ON, Canada. https://doi.org/10.1109/ICC.2012.6364356