Results 1 to 10 of about 702 (133)
Cross-Layer Optimization for Heterogeneous MU-MIMO/OFDMA Networks [PDF]
Sensors, 2021 To enable the full benefits from MU-MIMO (Multiuser-Multiple Input Multiple Output) and OFDMA (Orthogonal Frequency Division Multiple Access) to be achieved, the optimal use of these two technologies for a given set of network resources has been ...
Kyu-haeng Lee, Daehee Kim
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An efficient binary salp swarm algorithm for user selection in multiuser MIMO antenna systems [PDF]
Scientific ReportsThe past ten years have seen notable research activity and significant advancements in multiuser multiple-input multiple-output (MU-MIMO) antennas. An MU-MIMO antenna system must accommodate many subscribers without additional bandwidth or energy.
A. Sasikumar +7 more
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Applied Sciences, 2021 Cellular mobile systems aim at aggressive spectrum reuse to achieve high spectral efficiency. Unfortunately, this leads to unacceptable interference near cell borders.
Jeng-Shin Sheu, Kuan-Ming Huang
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LDPC Coded Multi-User Massive MIMO Systems With Low-Complexity Detection
IEEE Access, 2022 We design a low-density parity-check (LDPC) coded multi-user (MU) massive multiple-input multiple-output (MIMO) system with an iterative joint detection and decoding (JDD) algorithm.
Han Jin Park, Jeong Woo Lee
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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
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
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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
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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
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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
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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