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Symbol-level precoding with low resolution DACs for large-scale array MU-MIMO systems
Tsinos, Christos; Kalantari, Ashkan; Chatzinotas, Symeon et al.
2018In 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Peer reviewed
 

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Abstract :
[en] While (Multiple Input-Multiple Output) MIMO systems based on large-scale antenna arrays are seen as the solution to the continuously increasing demands in modern wireless systems, they require high hardware complexity and power consumption. To tackle this, solutions based on low resolution Analog-to-Digital Converters (ADCs) / Digital-to-Analog Converters (DACs) have been developed in the literature where they mainly propose quantized versions of typical channel dependent linear precoding solutions. Alternatively, nonlinear Symbol level Precoding techniques have been recently proposed for downlink Multi User (MU)-MIMO systems with low resolution DACs that achieve significantly improved performance in several cases. The existing SLP approaches support only DACs of 1-bit resolution which result in significant performance degradations, especially when constellations with order greater than 4 are employed. To that end, in this work a novel SLP approach is developed that supports systems with DACs of any resolution and it is applicable for any type of constellation. As it is verified by the presented numerical results, the proposed approach exhibits significantly improved performance when constellations with order greater than 4 are employed and require reduced computational complexity, compared to the existing solutions for the 1-bit DAC case.
Disciplines :
Computer science
Author, co-author :
Tsinos, Christos ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Kalantari, Ashkan ;  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 :
yes
Language :
English
Title :
Symbol-level precoding with low resolution DACs for large-scale array MU-MIMO systems
Publication date :
2018
Event name :
2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Event place :
Kalamata, Greece
Event date :
25-06-2018 to 28-06-2018
Audience :
International
Main work title :
2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Publisher :
IEEE
ISBN/EAN :
978-1-5386-3512-4
Peer reviewed :
Peer reviewed
Focus Area :
Computational Sciences
Available on ORBilu :
since 09 January 2019

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