Layered Group Sparse Beamforming for Cache-Enabled Green Wireless Networks

doi:10.1109/TCOMM.2017.2745579

	Layered Group Sparse Beamforming for Cache-Enabled Green Wireless Networks
	Xi Peng 1; Yuanming Shi2 ; Jun Zhang 1; Khaled B. Letaief 3
	2017-12
发表期刊	IEEE TRANSACTIONS ON COMMUNICATIONS
ISSN	0090-6778
卷号	65 期号:12 页码:5589-5603
发表状态	已发表
DOI	10.1109/TCOMM.2017.2745579
摘要	The exponential growth of mobile data traffic is driving the deployment of dense wireless networks, which will not only impose heavy backhaul burdens, but also generate considerable power consumption. Introducing caches to the wireless network edge is a potential and cost-effective solution to address these challenges. In this paper, we will investigate the problem of minimizing the network power consumption of cache-enabled wireless networks, consisting of the base station (BS) and backhaul power consumption. The objective is to develop efficient algorithms that unify adaptive BS selection, backhaul content assignment, and multicast beamforming, while taking account of user QoS requirements and backhaul capacity limitations. To address the NP-hardness of the network power minimization problem, we first propose a generalized layered group sparse beamforming (LGSBF) modeling framework, which helps to reveal the layered sparsity structure in the beamformers. By adopting the reweighted l(1)/l(2)-norm technique, we further develop a convex approximation procedure for the LGSBF problem, followed by a three-stage iterative LGSBF framework to induce the desired sparsity structure in the beamformers. Simulation results validate the effectiveness of the proposed algorithm in reducing the network power consumption, and demonstrate that caching plays a more significant role in networks with higher user densities and less power-efficient backhaul links.
关键词	Wireless caching content-centric wireless networks multicasting beamforming layered group sparse beamforming convex approximation network power minimization green communications
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收录类别	SCI ; EI
语种	英语
资助项目	National Nature Science Foundation of China (NSFC)[61601290]
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000418518900036
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS关键词	MIMO CELLULAR NETWORKS ; CONTENT DELIVERY ; ENERGY ; TRANSMISSION ; MULTICAST ; POWER
原始文献类型	Article
来源库	IEEE
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/14249
专题	信息科学与技术学院信息科学与技术学院_PI研究组_石远明组
作者单位	1.Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong 2.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 3.Hamad bin Khalifa University, Doha, Qatar
推荐引用方式 GB/T 7714	Xi Peng,Yuanming Shi,Jun Zhang,et al. Layered Group Sparse Beamforming for Cache-Enabled Green Wireless Networks[J]. IEEE TRANSACTIONS ON COMMUNICATIONS,2017,65(12):5589-5603.
APA	Xi Peng,Yuanming Shi,Jun Zhang,&Khaled B. Letaief.(2017).Layered Group Sparse Beamforming for Cache-Enabled Green Wireless Networks.IEEE TRANSACTIONS ON COMMUNICATIONS,65(12),5589-5603.
MLA	Xi Peng,et al."Layered Group Sparse Beamforming for Cache-Enabled Green Wireless Networks".IEEE TRANSACTIONS ON COMMUNICATIONS 65.12(2017):5589-5603.