Reference : A Worst-Case Performance Optimization Based Design Approach to Robust Symbol-Level Pr...

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	Focus Areas :	Security, Reliability and Trust
	To cite this reference:	http://hdl.handle.net/10993/42609

Title :	A Worst-Case Performance Optimization Based Design Approach to Robust Symbol-Level Precoding for Downlink MU-MIMO
Language :	English
Author, co-author :	Haqiqatnejad, Alireza [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Shahbazpanahi, Shahram [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > > ; University of Ontario Institute of Technology > Department of Electrical, Computer, and Software Engineering]
	Ottersten, Björn [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Publication date :	2020
Main document title :	IEEE Global Conference on Signal and Information Processing (GlobalSIP), Ottawa 11-14 November 2019
Publisher :	IEEE
Peer reviewed :	Yes
Audience :	International
Event name :	7th IEEE Global Conference on Signal and Information Processing (GlobalSIP)
Event date :	from 11-11-2019 to 14-11-2019
Event organizer :	IEEE
Event place (city) :	Ottawa
Event country :	Canada
Keywords :	[en] Downlink MU-MIMO ; Robust design ; SINR-constrained power minimization ; Symbol-level precoding ; Worst-case design
Abstract :	[en] This paper addresses the optimization problem of symbol-level precoding (SLP) in the downlink of a multiuser multiple-input multiple-output (MU-MIMO) wireless system while the precoder's output is subject to partially-known distortions. In particular, we assume a linear distortion model with bounded additive noise. The original signal-to-interference- plus-noise ratio (SINR) -constrained SLP problem minimizing the total transmit power is first reformulated as a penalized unconstrained problem, which is referred to as the relaxed robust formulation. We then adopt a worst-case design approach to protect the users' intended symbols and the targeted constructive interference with a desired level of confidence. Due to the non-convexity of the relaxed robust formulation, we propose an iterative algorithm based on the block coordinate ascent-descent method. We show through simulation results that the proposed robust design is flexible in the sense that the CI constraints can be relaxed so as to keep a desirable balance between achievable rate and power consumption. Remarkably, the new formulation yields more energy-efficient solutions for appropriate choices of the relaxation parameter, compared to the original problem.
Research centres :	Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM
Funders :	Fonds National de la Recherche - FnR
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/10993/42609
FnR project :	FnR ; FNR11332341 > Farbod Kayhan > ESSTIMS > Enhanced Signal Space opTImization for satellite comMunication Systems > 01/02/2017 > 31/01/2020 > 2016

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access SLP_WC.pdf Author preprint 435.44 kB View/Open

All documents in ORBi^lu are protected by a user license.

 

University of Luxembourg Library |  Feedback |  Legal notices Site Map