[en] We present a convex optimization based Symbol-Level Precoding (SLP) for sum power minimization and propose the low-latency closed-form algorithm to find a heuristic solution to the optimization problem. The technique exploits constructive interference at the multi-user MIMO systems and minimizes the sum power of the transmitted precoded signal per each symbol slot. As a result, the received signals gain extra Signal-to-Noise Ratio (SNR), which leads to the improved data rate and energy efficiency. We benchmark the low-complexity algorithm for solving the optimization technique against the conventional Fast Non-Negative Least Squares algorithm (NNLS). The demonstrated design of the SLP technique combined with the proposed closed-form algorithm has low computational complexity and fast processing time, which is applicable in low-latency high-throughput satellite communication systems.
Disciplines :
Computer science
Author, co-author :
Krivochiza, Jevgenij ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Merlano Duncan, Juan Carlos ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Andrenacci, Stefano ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
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 :
Closed-Form Solution for Computationally Efficient Symbol-Level Precoding
Publication date :
December 2018
Event name :
IEEE Global Communications Conference 2018
Event place :
Abu Dhabi, United Arab Emirates
Event date :
from 9-12-2018 to 14-12-2018
Focus Area :
Computational Sciences
FnR Project :
FNR11481283 - End-to-end Signal Processing Algorithms For Precoded Satellite Communications, 2016 (01/03/2017-28/02/2021) - Jevgenij Krivochiza