Reference : Constructive Interference for Generic Constellations
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
http://hdl.handle.net/10993/35449
Constructive Interference for Generic Constellations
English
Haqiqatnejad, Alireza mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Kayhan, Farbod mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Apr-2018
IEEE Signal Processing Letters
IEEE
25
4
586-590
Yes (verified by ORBilu)
International
1070-9908
[en] Constructive interference (CI) ; Multiuser multiple-input single-output (MISO) ; Symbol-level precoding (SLP)
[en] In this letter, we investigate optimal and relaxed constructive interference regions (CIR) for the symbol-level precoding (SLP) problem in the downlink of a multiuser multiple-input single-output (MISO) channel.We define two types of CIRs, namely, distance preserving CIR (DPCIR) and union bound CIR (UBCIR) for any given constellation shape and size. We then provide a systematic way to describe these regions as convex sets. Using the definitions of DPCIR and UBCIR, we show that the SLP power minimization problem, minimizing either sum or peak (per-antenna) transmit power, can always be formulated as a convex optimization problem. Our results indicate that these regions allow further reduction of the transmit power compared to the current state of the art without increasing the computational complexity at the transmitter or receiver.
http://hdl.handle.net/10993/35449
10.1109/LSP.2018.2808460
http://ieeexplore.ieee.org/document/8299553/
FnR ; FNR11332341 > Farbod Kayhan > ESSTIMS > Enhanced Signal Space opTImization for satellite comMunication Systems > 01/02/2017 > 31/01/2020 > 2016

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