Opportunistic Downlink Scheduling with Fair Resource Sharing for Distributed Antenna Systems

被引:3
作者
Ge, Xin [1 ]
Jin, Hu [2 ]
Leung, Victor C. M. [1 ]
机构
[1] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V5Z 1M9, Canada
[2] Hanyang Univ, Dept Elect & Commun Engn, Ansan, South Korea
来源
2014 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2014年
关键词
CDF-based scheduling; fairness; DAS; multiuser diversity; multiplexing gain; CAPACITY ANALYSIS; WIRELESS; CONSTRAINTS;
D O I
10.1109/ICC.2014.6884113
中图分类号
TN [电子技术、通信技术];
学科分类号
080906 [电磁信息功能材料与结构];
摘要
In this paper, we propose a novel cumulative-distribution-function-based scheduling (CS) with flexible-beam transmissions (CSFB) as an opportunistic downlink scheduling with fair resource sharing for distributed antenna systems (DASs). Taking advantage of the spatially distributed nature of remote antenna units (RAUs) in DASs, CSFB dynamically assigns a different weight for each user-RAU pair and adjusts the number of beams for transmissions based on the channel conditions, in order to increase the probability that each RAU can contribute to the throughput of users located near it by efficiently exploiting spatial multiplexing gain. Furthermore, by simply setting a single threshold for each RAU, which is applied for user selection, CSFB maintains fair resource sharing constraints. This simple setting greatly facilitates the scheduler design. Thus, our proposed CSFB can exploit the multiuser diversity gain provided by the independent channel fading of multiple users, as well as the spatial multiplexing gain through the effective utilization of distributed RAUs. Simulation results demonstrate that CSFB achieves a better throughput performance than CS with all-beam transmissions and CS with single-beam transmissions, while satisfying the fair resource sharing constraints.
引用
收藏
页码:5000 / 5005
页数:6
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