[en] Symbol-level precoding (SLP) is a promising technique which allows to constructively exploit the multi-user interference in the downlink of multiple antenna systems. Recently, this approach has also been used in the context of non-linear systems for reducing the instantaneous power imbalances among the antennas. However, previous works have not exploited SLP to improve the dynamic properties of the waveforms in the temporal dimension, which are fundamental for non-linear systems. To fill this gap, this paper proposes a novel precoding method, referred to as spatio-temporal SLP, which minimizes the peak-to-average power ratio of the transmitted waveforms both in the spatial and in the temporal dimensions, while at the same time exploiting the constructive interference effect. Numerical results are presented to highlight the enhanced performance of the proposed scheme with respect to state of the art SLP techniques, in terms of power distribution and symbol error rate over non-linear channels.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Spano, Danilo ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Alodeh, Maha
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)
External co-authors :
no
Language :
English
Title :
PAPR Minimization through Spatio-temporal Symbol-level Precoding for the Non-linear Multi-user MISO Channel
Publication date :
19 April 2018
Event name :
2018 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2018)
Event date :
from 15-04-2018 to 20-04-2018
Audience :
International
Main work title :
2018 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2018)
Peer reviewed :
Peer reviewed
FnR Project :
FNR10079323 - Multibeam Joint Processing For Broadband/Broadcast Convergence In Next Generation High Throughput Satellite Communications, 2015 (01/03/2015-14/07/2018) - Danilo Spano
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