NDLI: On the Relation Between Energy Efficiency and Spectral Efficiency of Multiple-Antenna Systems

Content Provider	IEEE Xplore Digital Library
Author	Jing Jiang Dianati, M. Imran, M.A. Tafazolli, R. Yan Chen
Copyright Year	1967
Abstract	Motivated by the increasing interest in energy-efficient communication systems, the relation between energy efficiency (EE) and spectral efficiency (SE) for multiple-input-multiple-output (MIMO) systems is investigated in this paper. To provide insights into the design of practical MIMO systems, we adopt a realistic power model and consider both independent Rayleigh fading and semicorrelated fading channels. We derived a novel and closed-form upper bound (UB) for the system EE as a function of SE. This UB exhibits great accuracy for a wide range of SE values and, thus, can be utilized for explicit assessment of the influence of SE on EE and for analytically addressing the EE optimization problems. Using this tight EE UB, our analysis unfolds two EE optimization issues: Given the number of transmit and receive antennas, an optimum value of SE is derived, such that the overall EE can be maximized, and given a specific value of SE, the optimal number of antennas is derived for maximizing the system EE.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	3463
Ending Page	3469
Page Count	7
File Size	839930
File Format	PDF
ISSN	00189545
Volume Number	62
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Correlation Receiving antennas Rayleigh channels Optimization spectral efficiency (SE) Energy efficiency (EE) energy efficiency optimization multiple-antenna systems Rayleigh fading channels
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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