Precoding for RIS-Assisted Multi-User MIMO-DQSM Transmission Systems

Francisco R. Castillo-Soria, J. Alberto Del Puerto-Flores (), Cesar A. Azurdia-Meza, Vinoth Babu Kumaravelu, Jorge Simón and Carlos A. Gutierrez
Additional contact information
Francisco R. Castillo-Soria: Department of Telecommunications, Faculty of Science, Universidad Autonoma de San Luis Potosi, San Luis Potosi 78210, Mexico
J. Alberto Del Puerto-Flores: Facultad de Ingeniería, Universidad Panamericana, Álvaro del Portillo 49, Zapopan 45010, Mexico
Cesar A. Azurdia-Meza: Department of Electrical Engineering, Universidad de Chile, Santiago 8370451, Chile
Vinoth Babu Kumaravelu: Department of Communication Engineering, School of Electronics Engineering, Vellore Institute of Technology, Vellore 632014, India
Jorge Simón: Catedras CONACYT, Unidad Academica de Ingenieria Electrica, Universidad Autonoma de Zacatecas, Zacatecas 98000, Mexico
Carlos A. Gutierrez: Department of Telecommunications, Faculty of Science, Universidad Autonoma de San Luis Potosi, San Luis Potosi 78210, Mexico

Future Internet, 2023, vol. 15, issue 9, 1-18

Abstract: This paper presents two precoding techniques for a reconfigurable intelligent surface (RIS)-assisted multi-user (MU) multiple-input multiple-output (MIMO) double quadrature spatial modulation (DQSM) downlink transmission system. Instead of being applied at the remote RIS, the phase shift vector is applied at the base station (BS) by using a double precoding stage. Results show that the proposed RIS-MU-MIMO-DQSM system has gains of up to 17 dB in terms of bit error rate (BER) and a reduction in detection complexity of 51% when compared with the conventional MU-MIMO system based on quadrature amplitude modulation (QAM). Compared with a similar system based on amplify and forward (AF) relay-assisted technique, the proposed system has a gain of up to 18 dB in terms of BER under the same conditions and parameters.

Keywords: precoding; RIS; double-QSM; MIMO; multi-user detection (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1999-5903/15/9/299/pdf (application/pdf)
https://www.mdpi.com/1999-5903/15/9/299/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jftint:v:15:y:2023:i:9:p:299-:d:1231576

Access Statistics for this article

Future Internet is currently edited by Ms. Grace You

More articles in Future Internet from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().