A QoE-based OFDM resource allocation scheme for energy efficiency and quality guarantee in multiuser-multiservice system
A QoE-based OFDM resource allocation scheme for energy efficiency and quality guarantee in multiuser-multiservice system
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DOI：
10.1109/glocomw.2012.6477768
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Bingquan Li;S. Li;C. Xing;Zesong Fei;Jingming Kuang
中科院分区：
文献类型：
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作者：
Bingquan Li;S. Li;C. Xing;Zesong Fei;Jingming Kuang
用户体验质量(Quality of Experience，QOE)是反映用户对多媒体服务满意度的广泛使用的指标。研究了正交频分复用系统中QOE驱动的资源分配技术。与其他方案不同的是，功率分配和子载波调度都考虑了多用户多业务场景，更贴近实际通信系统。提出了一种计算复杂度较低的渐进式资源分配算法(GRAA)，该算法在保证用户感知的不同多媒体业务服务质量的同时，解决了系统的能量效率问题。仿真结果表明，与穷举搜索算法相比，我们提出的算法可以在几乎相同的性能下获得更低的复杂度。
Quality of Experience (QoE) is a widely used metric reflecting the users' satisfaction of the multimedia service. This paper studies the QoE-driven resource allocation technique in the Orthogonal Frequency Division Multiplexing (OFDM) system. Different from other schemes, multiuser-multiservice scenario is taken into consideration for both power allocation and subcarrier scheduling, which is much closer to the practice communication system. A gradual resource allocation algorithm (GRAA) with lower computational complexity is proposed, which aims at addressing the system energy efficiency while guaranteeing user-perceived QoE for different multimedia services. Simulation results show that the almost same performance can be approached by our proposed scheme with much lower complexity compared with the exhaustive search algorithm.