Reference : Per-antenna Power Minimization in Symbol-Level Precoding

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/28512

Title :	Per-antenna Power Minimization in Symbol-Level Precoding
Language :	English
Author, co-author :	Spano, Danilo [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Alodeh, Maha [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Chatzinotas, Symeon [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Ottersten, Björn [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Publication date :	Dec-2016
Main document title :	IEEE GLOBECOM 2016
Peer reviewed :	Yes
Audience :	International
Event name :	IEEE GLOBECOM 2016
Event date :	from 4-12-2016 to 8-12-2016
Event organizer :	IEEE Communications Society
Event place (city) :	Washington DC
Event country :	USA
Keywords :	[en] Symbol-level precoding ; Constructive interference ; Per-antenna power minimization ; Multi-antenna system
Abstract :	[en] This paper investigates the problem of the interference among multiple simultaneous transmissions in the downlink channel of a multi-antenna wireless system. A symbol-level precoding scheme is considered, where the data information is used, along with the channel state information, in order to exploit the multi-user interference and transform it into useful power at the receiver side. In this framework, it is important to consider the power limitations individually for each transmitting antenna, since a common practice in multi-antenna systems is the use of separate per-antenna amplifiers. Thus, herein the problem of per-antenna power minimization in symbol-level precoding is formulated and solved, under Quality-of-Service constraints. In the proposed approach, the precoding design is optimized in order to control the instantaneous power transmitted by the antennas, and more specifically to limit the power peaks, while guaranteeing some specific target signal-to-noise ratios at the receivers. Numerical results are presented to show the effectiveness of the proposed scheme, which outperforms the existing state of the art techniques in terms of reduction of the power peaks and of the peak-to-average power ratio across the transmitting antennas.
Funders :	European Commission - EC
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/10993/28512
Framework Programme / European Project :	H2020 ; 645047 - SANSA - Shared Access Terrestrial-Satellite Backhaul Network enabled by Smart Antennas

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