Results 1 to 10 of about 10,463 (206)
Ubiquitous cell-free Massive MIMO communications [PDF]
EURASIP Journal on Wireless Communications and Networking, 2019 Since the first cellular networks were trialled in the 1970s, we have witnessed an incredible wireless revolution. From 1G to 4G, the massive traffic growth has been managed by a combination of wider bandwidths, refined radio interfaces, and network ...
Giovanni Interdonato +4 more
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Energy Efficiency of User-Centric, Cell-Free Massive MIMO-OFDM with Instantaneous CSI [PDF]
Entropy, 2022 In the user-centric, cell-free, massive multi-input, multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, a large number of deployed access points (APs) serve user equipment (UEs) simultaneously, using the same time–frequency ...
Tongzhou Han, Danfeng Zhao
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Efficient User-Serving Scheme in the User-Centric Cell-Free Massive MIMO System [PDF]
Sensors, 2022 A cell-free massive multiple input multiple output (MIMO) system is an attractive network model that is in the spotlight in 5G and future communication systems.
Ji-Hye Oh +5 more
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The Downlink Performance for Cell-Free Massive MIMO with Instantaneous CSI in Slowly Time-Varying Channels [PDF]
Entropy, 2021 In centralized massive multiple-input multiple-output (MIMO) systems, the channel hardening phenomenon can occur, in which the channel behaves as almost fully deterministic as the number of antennas increases.
Tongzhou Han, Danfeng Zhao
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On Scalability of FDD-Based Cell-Free Massive MIMO Framework [PDF]
Sensors, 2023 Cell-free massive multiple-input multiple-output (MIMO) systems have the potential of providing joint services, including joint initial access, efficient clustering of access points (APs), and pilot allocation to user equipment (UEs) over large coverage ...
Beenish Hassan, Sobia Baig, Saad Aslam
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On the Security of Cell-Free Massive MIMO Networks [PDF]
SensorsThe rapid growth of wireless devices, the expansion of the Internet of Things, and the aggregate demand for Ultra-Reliable Low-Latency communications (URLLC) are driving the improvement of next-generation wireless systems.
Hanaa Mohammed +4 more
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Beamforming Design for Active-RIS-Aided Cell-Free Massive MIMO Networks Under Imperfect CSI [PDF]
SensorsIn the pursuit of an efficient 6G network that achieves an enhanced capacity with minimal power consumption, reconfigurable intelligent surfaces (RISs) and cell-free (CF) massive multiple-input-multiple-output (MIMO) networks emerge as two key ...
Qiang Ma, Hao Fang, Longxiang Yang
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User-Centric Cell-Free Massive MIMO with Low-Resolution ADCs for Massive Access [PDF]
SensorsThis paper proposes a heuristic association algorithm between access points (APs) and user equipment (UE) in user-centric cell-free massive multiple-input-multiple-output (MIMO) systems, specifically targeting scenarios where UEs share the same frequency
Jin-Woo Kim +7 more
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ICT Express, 2021 One of promising transmission technologies for beyond-5G wireless communication is cell-free massive MIMO where all the access nodes (ANs) cooperate to coherently serve all the user equipments (UEs).
Seung-Eun Hong
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Cell-Free Massive MIMO with Energy-Efficient Downlink Operation in Industrial IoT
Mathematics, 2022 Cell-free massive Multi-input Multi-output (MIMO) can offer higher spectral efficiency compared with cellular massive MIMO by providing services to users through the collaboration of distributed APs, and cell-free massive MIMO systems with distributed ...
Xiaomin Chen +4 more
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