Results 11 to 20 of about 7,184 (178)
IET Networks, EarlyView., 2023 We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh +4 more
wiley +1 more source
Dynamic Channel Acquisition in MU-MIMO [PDF]
IEEE Transactions on Communications, 2014 to appear in IEEE Trans ...
Jiang, Zhiyuan +2 more
openaire +2 more sources
EQSM-based multiuser MIMO downlink transmission for correlated fading channels
EURASIP Journal on Wireless Communications and Networking, 2020 This paper presents three multiuser multiple input-multiple output (MU-MIMO) downlink transmission strategies based on the extended quadrature spatial modulation (EQSM) system for mobile communication.
Francisco R. Castillo-Soria +4 more
doaj +1 more source
Joint Power Allocation and Scheduling Techniques for BER Minimization in Multiuser MIMO Systems
IEEE Access, 2021 In contrast to the 4G LTE, one of the key requirements of 5G and beyond networks is ultra-high reliability. Towards this end, we investigate the problem of scheduling with joint power allocation for multi-user multiple-input multiple-output (MU-MIMO ...
Kyeongjun Ko +3 more
doaj +1 more source
Quantized Precoding for Massive MU-MIMO [PDF]
IEEE Transactions on Communications, 2017 IEEE Transactions on Communications, 65 (11)
Sven Jacobsson +4 more
openaire +3 more sources
Joint interference alignment and power allocation for NOMA-based multi-user MIMO systems
EURASIP Journal on Wireless Communications and Networking, 2018 Interference alignment (IA) and non-orthogonal multiple access (NOMA) are key technologies for achieving the capacity scaling required by next generation networks to overcome the unprecedented growth of data network traffic.
Mohamed Rihan, Lei Huang, Peichang Zhang
doaj +1 more source
Sum‐rate optimization scheme for time‐varying distributed MU‐MIMO systems
IET Communications, 2021 Sum‐rate optimization problem is a key issue in a time‐varying multi‐user multi‐input multi‐output (MU‐MIMO) distributed antenna system. Channel precoding matrix is the key technology in the achievable sum‐rate optimization problem.
Shaoguo Xie, Liefu Ai
doaj +1 more source
Precoding for RIS-Assisted Multi-User MIMO-DQSM Transmission Systems
Future Internet, 2023 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.
Francisco R. Castillo-Soria +5 more
doaj +1 more source
Mode Switching for the Multi-Antenna Broadcast Channel Based on Delay and Channel Quantization
EURASIP Journal on Advances in Signal Processing, 2009 Imperfect channel state information degrades the performance of multiple-input multiple-output (MIMO) communications; its effects on single-user (SU) and multiuser (MU) MIMO transmissions are quite different.
Jun Zhang +3 more
doaj +1 more source
IEEE Access, 2022 In this paper, a design and implementation of fixed-complexity sphere decoder (FSD) combined with interference mitigation algorithm for downlink (DL) multiuser (MU) multiple-input multiple-output (MIMO) system is presented.
Minjoon Kim
doaj +1 more source