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Symbol-Level Precoding with Low Resolution DACs for Large-Scale Array MU-MIMO Systems
Univ Luxembourg, Luxembourg.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Univ Luxembourg, Luxembourg.
Univ Luxembourg, Luxembourg.
2018 (English)In: 2018 IEEE 19TH INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS (SPAWC), IEEE , 2018, p. 671-675Conference paper, Published paper (Refereed)
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.

Place, publisher, year, edition, pages
IEEE , 2018. p. 671-675
Series
IEEE International Workshop on Signal Processing Advances in Wireless Communications, ISSN 2325-3789
Keywords [en]
Symbol Level Precoding; Low Resolution DACs; Large-scale Antenna Array; Quantized Precoding; MIMO
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-153412DOI: 10.1109/SPAWC.2018.8445995ISI: 000451080200135ISBN: 978-1-5386-3512-4 (electronic)OAI: oai:DiVA.org:liu-153412DiVA, id: diva2:1270610
Conference
IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Note

Funding Agencies|FNR, Luxembourg; European project H2020 SANSA [645047]

Available from: 2018-12-13 Created: 2018-12-13 Last updated: 2018-12-13

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf