標題: | A User-Differentiation-based Resource Allocation Scheme for OFDMA Downlink Systems |
作者: | Chung, Yao-Hsing Chang, Chung-Ju Zhang, Zhaoyang 交大名義發表 National Chiao Tung University |
關鍵字: | OFDMA downlink system;radio resource allocation;quality-of-service (QoS);fuzzy logics |
公開日期: | 2012 |
摘要: | 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. |
URI: | http://hdl.handle.net/11536/20957 |
ISBN: | 978-1-4577-2053-6 |
ISSN: | 1550-3607 |
期刊: | 2012 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) |
顯示於類別: | 會議論文 |