Energy-Spectral Efficiency Trade-Off in Virtual MIMO Cellular Systems

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	Energy-Spectral Efficiency Trade-Off in Virtual MIMO Cellular Systems
	Hong, Xuemin ; Jie, Yu ; Wang, Cheng-Xiang ; Shi, Jianghong ; Ge, Xiaohu ; Hong XM(洪学敏) ; Shi JH(石江宏)
刊名	http://dx.doi.org/10.1109/JSAC.2013.131013
	2013
关键词	WIRELESS SENSOR NETWORKS LOW-POWER REGIME COGNITIVE RADIO NETWORKS RESOURCE-ALLOCATION CAPACITY ANALYSIS OFCDM SYSTEMS BANDWIDTH COMMUNICATION INTERFERENCE TRANSMISSION
英文摘要	National Natural Science Foundation of China (NSFC) [61201195, 61210002, 61271224]; Natural Science Foundation of Fujian [2012J01292]; Opening Project of the Key Laboratory of Cognitive Radio and Information Processing (Guilin University of Electronic Technology), Ministry of Education [2013KF01]; Ministry of Science and Technology (MOST), China; International Science and Technology Collaboration Program [0903]; Hubei Provincial Science and Technology Department [2011BFA004]; Virtual multiple-input multiple-output (V-MIMO) technology promises significant performance enhancements to cellular systems in terms of spectral efficiency (SE) and energy efficiency (EE). How these two conflicting metrics scale up in large cellular V-MIMO networks is unclear. This paper studies the EE-SE trade-off of the uplink of a multi-user cellular V-MIMO system with decode-and-forward type protocols. We first express the trade-off in an implicit function and further derive closed-form formulas of the trade-off in low and high SE regimes. Unlike conventional MIMO systems, the EE-SE trade-off of the V-MIMO system is shown to be susceptible to many factors including protocol design (e.g., resource allocation) and scenario characteristics (e.g., user density). Focusing on the medium and high SE regimes, we propose a heuristic resource allocation algorithm to optimize the EE-SE trade-off. The fundamental performance limits of the optimized V-MIMO system are subsequently investigated and compared with conventional MIMO systems in different scenarios. Numerical results reveal a surprisingly chaotic behavior of V-MIMO systems when the user density scales up. Our analysis indicates that low frequency reuse factor, adaptive resource allocation, and user density control are critical to harness the full benefits of cellular V-MIMO systems.
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/92534]
专题	信息技术－已发表论文
推荐引用方式 GB/T 7714	Hong, Xuemin,Jie, Yu,Wang, Cheng-Xiang,et al. Energy-Spectral Efficiency Trade-Off in Virtual MIMO Cellular Systems[J]. http://dx.doi.org/10.1109/JSAC.2013.131013,2013.
APA	Hong, Xuemin.,Jie, Yu.,Wang, Cheng-Xiang.,Shi, Jianghong.,Ge, Xiaohu.,...&石江宏.(2013).Energy-Spectral Efficiency Trade-Off in Virtual MIMO Cellular Systems.http://dx.doi.org/10.1109/JSAC.2013.131013.
MLA	Hong, Xuemin,et al."Energy-Spectral Efficiency Trade-Off in Virtual MIMO Cellular Systems".http://dx.doi.org/10.1109/JSAC.2013.131013 (2013).