NDLI: Power Optimization in Cell-Free Massive MIMO with Non-ideal Hardware Transceiver

Content Provider	IET Digital Library
Author	Zhang, Yao Cao, Haotong Zhou, Meng Li, Long Yang, Longxiang
Abstract	A downlink cell-free massive Multipleinput multiple-output (mMIMO) system is explored. To investigate the impact of hardware distortion on downlink cell-free mMIMO, this paper recalls a well-established model of hardware impairment and derives a new closedform downlink per-user Spectral efficiency (SE) expression for distributed conjugate beamforming precoding. Based on this trackable expression, two power control algorithms, namely max-total-SE and mixed Quality-of-service (QoS) algorithms, are proposed. Numerical results indicate that the downlink per-user SE is primarily limited by the hardware quality of the receiver, especially when the user corresponds to the receiver. In addition, the proposed max-total-SE algorithm has a fast convergence rate and can significantly improve the total SE compared to the Equal power control (EPC) scheme. What's more, our mixed QoS algorithm also performs well in many respects.
Starting Page	190
Ending Page	198
Page Count	9
ISSN	10224653
Volume Number	29
e-ISSN	20755597
Issue Number	Issue 1, Jan (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/cje/29/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/cje.2019.12.005
Journal	Chinese Journal of Electronics
Publisher Date	2020-01-01
Access Restriction	Open
Rights Holder	© Chinese Institute of Electronics
Subject Keyword	Antenna Theory Array Signal Processing Cell-free Massive MIMO Closed-form Downlink Per-user Spectral Efficiency Expression Code Downlink Cell-free Massive Multiple-input Multiple-output System Downlink Cell-free MMIMO Downlink Per-user SE Equal Power Control Scheme Hardware Distortion Hardware Quality Max-total-SE Algorithm MIMO Communication Mixed QoS Algorithm Nonideal Hardware Transceiver Optimisation Optimisation Technique Power Control Power Optimization Precoding Quality of Service Radio Link And Equipment Radio Transceivers Signal Processing And Detection
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering

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