NDLI: On the Energy Efficiency-Spectral Efficiency Trade-Off of Distributed MIMO Systems

Content Provider	IEEE Xplore Digital Library
Author	Onireti, O. Heliot, F. Imran, M.A.
Copyright Year	1972
Abstract	In this paper, the trade-off between energy efficiency (EE) and spectral efficiency (SE) is analyzed for both the uplink and downlink of the distributed multiple-input multiple-output (DMIMO) system over the Rayleigh fading channel while considering different types of power consumption models (PCMs). A novel tight closed-form approximation of the DMIMO EE-SE trade-off is presented and a detailed analysis is provided for the scenario with practical antenna configurations. Furthermore, generic and accurate low and high-SE approximations of this trade-off are derived for any number of radio access units (RAUs) in both the uplink and downlink channels. Our expressions have been utilized for assessing both the EE gain of DMIMO over co-located MIMO (CMIMO) and the incremental EE gain of DMIMO in the downlink channel. Our results reveal that DMIMO is more energy efficient than CMIMO for cell edge users in both the idealistic and realistic PCMs; whereas in terms of the incremental EE gain, connecting the user terminal to only one RAU is the most energy efficient approach when a realistic PCM is considered.
Starting Page	3741
Ending Page	3753
Page Count	13
File Size	916544
File Format	PDF
ISSN	00906778
Volume Number	61
Issue Number	9
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	Approximation methods Uplink Downlink MIMO Phase change materials Antennas Fading Rayleigh channels Energy efficiency spectral efficiency trade-off distributed MIMO
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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