Results 31 to 40 of about 193,376 (261)
Spectral Efficiency Considerations in 6G Networks
IEEE Open Journal of the Communications SocietyAs wireless connectivity continues to evolve toward 6G, the demand to efficiently deliver higher throughput, lower latency, and improved reliability increases.
Joseph Boccuzzi
doaj +1 more source
Sensors, 2023 Full-duplex (FD) and reconfigurable intelligent surface (RIS) are potential technologies for achieving wireless communication effectively. Therefore, in theory, the RIS-aided FD system is supposed to enhance spectral efficiency significantly for the ...
Kunbei Pan +3 more
doaj +1 more source
SCMA Spectral and Energy Efficiency with QoS [PDF]
GLOBECOM 2020 - 2020 IEEE Global Communications Conference, 2020 GC
Samira Jaber +3 more
openaire +2 more sources
Information, 2018 In recent years, there has been a rapid evolution of wireless technologies that has led to the challenge of high demand for spectral resources. To overcome this challenge, good spectrum management is required that calls for more efficient use of the ...
Prince Semba Yawada, Mai Trung Dong
doaj +1 more source
Spectral Efficiency Improvement and Power Control Optimization of Massive MIMO Networks
IEEE Access, 2021 Higher requirements must be put forward about wireless signal transmission in harsh environments. Energy loss mitigation, channel estimation, noise interference reduction demands high quality of service in wireless communication.
Xiu Zhang, Hao Qi, Xin Zhang, Liang Han
doaj +1 more source
An Enhanced DCO-OFDM Scheme for Dimming Control in Visible Light Communication Systems
IEEE Photonics Journal, 2016 In visible light communication (VLC) systems, optical orthogonal frequency-division multiplexing (O-OFDM) is an appealing modulation scheme. Recently, a number of O-OFDM schemes have been proposed. Among them, direct-current O-OFDM (DCO-OFDM) is a widely
Yang Yang +3 more
doaj +1 more source
IEEE Access, 2023 This paper focuses on investigating uplink (UL) data transmission in cell-free massive MIMO based on orthogonal frequency division multiplexing (CF-mMIMO-OFDM) systems, taking into account the effects of hardware impairments (HWIs).
Asma Mabrouk, Rafik Zayani
doaj +1 more source
Scalable Cell-Free Massive MIMO with Multiple CPUs
Mathematics, 2022 In this paper, we consider the uplink of a scalable cell-free massive MIMO (CF-M-MIMO) system where user equipments (UEs) are served only by a subset of access points (APs).
Feiyang Li +3 more
doaj +1 more source
Физика волновых процессов и радиотехнические системы, 2020 This article is devoted to the study of the possibilities of increasing spectral efficiency in MIMO systems by using antennas with substrates of biisotropic and bianisotropic chiral metamaterials and various types of fractal emitters, in particular ...
Andrey N. Bespalov +3 more
doaj +1 more source
On the Spectral Efficiency for Distributed Massive MIMO Systems
Applied Sciences, 2021 Distributed MIMO (D-MIMO) systems are expected to play a key role in deployments for future mobile communications. Together with massive MIMO technology, D-MIMO aims to maximize the spectral efficiency and data rate in mobile networks.
Alejandro Ramírez-Arroyo +4 more
doaj +1 more source