Results 11 to 20 of about 637,438 (171)
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
On the Impact of Hardware Impairments on Massive MIMO [PDF]
, 2014 Massive multi-user (MU) multiple-input multiple-output (MIMO) systems are one possible key technology for next generation wireless communication systems. Claims have been made that massive MU-MIMO will increase both the radiated energy efficiency as well
Fager, Christian +28 more
core +1 more source
High-Efficiency Expectation Propagation Detector for High-Order Massive MIMO Systems
IEEE Access, 2019 Multiple-inputs multiple-outputs (MIMO) technology, including massive MIMO, plays an important role in modern wireless communication systems. Massive MIMO systems with high-order modulation can promote spectrum efficiency.
Guoqiang Yao +3 more
doaj +1 more source
Entropy, 2020 As the core technology of 5G mobile communication systems, massive multi-input multi-output (MIMO) can dramatically enhance the energy efficiency (EE), as well as the spectral efficiency (SE), which meets the requirements of new applications.
Bin Jiang +5 more
doaj +1 more source
CSI Feedback Based on Deep Learning for Massive MIMO Systems
IEEE Access, 2019 Aiming at the problem of high complexity and low feedback accuracy of existing channel state information (CSI) feedback algorithms for frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, this paper proposes a CSI ...
Yong Liao +3 more
doaj +1 more source
Massive MIMO-NOMA Based MEC in Task Offloading for Delay Minimization
IEEE Access, 2023 Mobile edge computing (MEC) has been considered a promising technology to reduce task offloading and computing delay by enabling mobile devices to offload their computation-intensive tasks. Non-orthogonal multiple access (NOMA) is regarded as a promising
Saadet Simay Yilmaz, Berna Ozbek
doaj +1 more source
, 2020 Multiple-input, multiple-output (MIMO), which transmits multiple data streams via multiple antenna elements, is one of the most attractive technologies in the wireless communication field.
core +1 more source
Analysis and Design of Channel Estimation in Multicell Multiuser MIMO OFDM Systems [PDF]
, 2014 This paper investigates the uplink transmission in multicell multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. The system model considers imperfect channel estimation, pilot contamination (PC), and
Xu, Peng +3 more
core +1 more source
IEEE Access, 2018 By enabling very high bandwidth for radio communications, the millimeter-wave (mmWave), which can easily be integrated with massive-multiple-input-multiple-output (massive-MIMO) due to small antenna size, has been attracting growing attention as a ...
Wenchi Cheng +4 more
doaj +1 more source
Spatial modulation for generalized MIMO: challenges, opportunities and implementation [PDF]
, 2013 A key challenge of future mobile communication research is to strike an attractive compromise between wireless network's area spectral efficiency and energy efficiency.
Renzo, Marco Di +13 more
core +1 more source