Open AccessGeneralized Quadrature Spatial Modulation Scheme Using Antenna Grouping
Author(s) -
CastilloSoria Francisco Rubén,
CortezGonzález Joaquín,
RamirezGutierrez Raymundo,
MacielBarboza Fermín Marcelo,
SorianoEquigua Leonel
Publication year - 2017
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.17.0117.0162
Subject(s) - quadrature (astronomy) , algorithm , transmission (telecommunications) , reduction (mathematics) , mathematics , single antenna interference cancellation , electronic engineering , multiplexing , spatial multiplexing , computer science , telecommunications , engineering , mimo , decoding methods , geometry , channel (broadcasting)
This paper presents a novel generalized quadrature spatial modulation ( GQSM ) transmission scheme using antenna grouping. The proposed GQSM scheme combines QSM and conventional spatial multiplexing ( SM ux) techniques in order to improve the spectral efficiency ( SE ) of the system. Analytical and simulation results show that the proposed transmission scheme has minimal losses in terms of the average bit error probability along with the advantage of an increased SE compared with previous SM and QSM schemes. For the case studies, this advantage represents a reduction of up to 81% in terms of the number of required transmit antennas compared with QSM . In addition, a detection architecture based on the ordered successive interference cancellation scheme and the QR decomposition is presented. The proposed QRD ‐ M adaptive algorithm showed a near‐maximum‐likelihood performance with a complexity reduction of approximately 90%.