Reference : Energy-Efficient Hybrid Symbol-Level Precoding via Phase Shifter Selection in mmWave ...
Scientific congresses, symposiums and conference proceedings : Paper published in a book
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
http://hdl.handle.net/10993/46382
Energy-Efficient Hybrid Symbol-Level Precoding via Phase Shifter Selection in mmWave MU-MIMO Systems
English
Haqiqatnejad, Alireza mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Kayhan, Farbod mailto [University of Surrey > Institute for Communication Systems, Department of Electrical and Electronic Engineering]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
25-Jan-2021
Energy-Efficient Hybrid Symbol-Level Precoding via Phase Shifter Selection in mmWave MU-MIMO Systems
1-6
Yes
No
International
IEEE Global Communications Conference (GLOBECOM)
from 07-12-2020 to 11-12-2020
IEEE
Taipei
Taiwan
[en] Energy efficiency ; Hybrid symbol-level precoding ; Multiuser mmWave massive MIMO ; Phase shifter selection
[en] We address the symbol-level precoding design problem for the downlink of a multiuser millimeter wave (mmWave) multiple-input multiple-output wireless system. We consider a hybrid analog-digital architecture with phase shifter selection where a small-sized baseband precoder is followed by two successive networks of analog on-off switches and variable phase shifters according to a fully-connected structure. We jointly optimize the digital baseband precoder and the states of the switching network on a symbol-level basis, i.e., by exploiting both the channel state information (CSI) and the instantaneous data symbols, while the phase-shifting network is designed only based on the CSI. Our approach to this joint optimization is to minimize the Euclidean distance between the optimal fully-digital and the hybrid symbol-level precoders. It is shown via numerical results that using the proposed approach, up to 50 percent of the phase shifters can be switched off on average, allowing for reductions in the power consumption of the phase-shifting network. Adopting appropriate power consumption models for the analog precoder, our energy efficiency analysis further shows that this power reduction can substantially improve the energy efficiency of the hybrid precoding compared to the fully-digital and the state-of-the-art schemes.
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM
Fonds National de la Recherche - FnR
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/46382
10.1109/GLOBECOM42002.2020.9322573
https://ieeexplore.ieee.org/document/9322573
FnR ; FNR11332341 > Farbod Kayhan > ESSTIMS > Enhanced Signal Space Optimization For Satellite Communication Systems > 01/02/2017 > 31/01/2020 > 2016

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