[en] In this paper, we address the symbol level precoding (SLP) design problem under max-min SINR criterion in the downlink of multiuser multiple-input single-output (MISO) channels. First, we show that the distance preserving constructive interference regions (DPCIR) are always polyhedral angles (shifted pointed cones) for any given constellation point with unbounded decision region. Then we prove that any signal in a given unbounded DPCIR has a norm larger than the norm of the corresponding vertex if and only if the convex hull of the constellation contains the origin. Using these properties, we show that the power of the noiseless received signal lying on an unbounded DPCIR is an strictly increasing function of two parameters. This allows us to reformulate the originally non-convex SLP max-min SINR as a convex optimization problem. We discuss the loss due to our proposed convex reformulation and provide some simulation results.
Disciplines :
Ingénierie électrique & électronique
Auteur, co-auteur :
HAQIQATNEJAD, Alireza ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
KAYHAN, Farbod ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Co-auteurs externes :
no
Langue du document :
Anglais
Titre :
Symbol-Level Precoding Design for Max-Min SINR in Multiuser MISO Broadcast Channels
Date de publication/diffusion :
27 août 2018
Nom de la manifestation :
2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Organisateur de la manifestation :
IEEE
Lieu de la manifestation :
Kalamata, Grèce
Date de la manifestation :
25-28 June 2018
Titre de l'ouvrage principal :
International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Kalamata 25-28 June 2018
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