Open AccessAF relay assisted multiuser MIMO‐DQSM downlink transmission system
Author(s) -
CastilloSoria F.R.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2020.0239
Subject(s) - mimo , quadrature amplitude modulation , telecommunications link , relay , electronic engineering , phase shift keying , computer science , transmission (telecommunications) , quadrature (astronomy) , bit error rate , multi user mimo , control theory (sociology) , telecommunications , engineering , physics , beamforming , channel (broadcasting) , power (physics) , quantum mechanics , control (management) , artificial intelligence
This Letter presents an amplify and forward (AF) relay assisted multiuser multiple input‐multiple output (MU‐MIMO) downlink transmission system based on a double quadrature spatial modulation (DQSM) scheme. The authors analyse and compared the bit error rate performance of the proposed AF‐MU‐MIMO‐DQSM system with its conventional counterpart AF‐MU‐MIMO system, which uses quadrature amplitude modulation/phase shift‐keying modulation. Results show that the utilised technique can effectively cancel the interference produced by multiple users and multiple relays in the system. The proposed AF‐MU‐MIMO‐DQSM system has up to 2 dB gain compared with the conventional system for the analysed cases.