Channel Estimation and Hybrid Combining for Wideband Terahertz Massive MIMO Systems [PDF]
IEEE Journal on Selected Areas in Communications, 2021 Terahertz (THz) communication is widely considered as a key enabler for future 6G wireless systems. However, THz links are subject to high propagation losses and inter-symbol interference due to the frequency selectivity of the channel.
Konstantinos Dovelos +3 more
semanticscholar +1 more source
Massive MIMO LEO Satellite Communications System
天地一体化信息网络, 2022 Extending massive multiple-input multiple-output (MIMO) technique to low earth orbit (LEO) satellite communication systems enables satellites to implement fl exible beamforming, which can make full use of the spatial degrees of freedom of massive MIMO ...
Kexin LI, Li YOU, Xiqi GAO
doaj +2 more sources
Massive Connectivity With Massive MIMO—Part I: Device Activity Detection and Channel Estimation [PDF]
IEEE Transactions on Signal Processing, 2017 This two-part paper considers an uplink massive device communication scenario in which a large number of devices are connected to a base station (BS), but user traffic is sporadic so that in any given coherence interval, only a subset of users is active.
Liang Liu, Wei Yu
semanticscholar +1 more source
Experimental Evaluations of TDD-Based Massive MIMO Deployment for Mobile Network Operators
IEEE Access, 2020 Massive Multiple Input Multiple Output (MIMO) is an essential component for future wireless cellular networks. One of its biggest advantages is to use the 5G spectrum more intelligently by extending both coverage (via high gain adaptive beamforming) and ...
Engin Zeydan, Omer Dedeoglu, Yekta Turk
doaj +1 more source
Massive MIMO Transmission for LEO Satellite Communications [PDF]
IEEE Journal on Selected Areas in Communications, 2020 Low earth orbit (LEO) satellite communications are expected to be incorporated in future wireless networks, in particular 5G and beyond networks, to provide global wireless access with enhanced data rates.
Li You +5 more
semanticscholar +1 more source
Beyond Massive MIMO: The Potential of Data Transmission With Large Intelligent Surfaces [PDF]
IEEE Transactions on Signal Processing, 2017 In this paper, we consider the potential of data transmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a large intelligent surface (
Sha Hu, F. Rusek, O. Edfors
semanticscholar +1 more source
Mobile Cell-Free Massive MIMO: Challenges, Solutions, and Future Directions [PDF]
IEEE wireless communications, 2023 Cell-free (CF) massive multiple-input multiple-output (MIMO) systems, which exploit many geographically distributed access points to coherently serve user equipment via spatial multiplexing on the same time-frequency resource, has become a vital ...
Jiakang Zheng +6 more
semanticscholar +1 more source
Throughput, Spectral, and Energy Efficiency of 5G Massive MIMO Applications Using Different Linear Precoding Schemes [PDF]
International Journal of Electronics and Telecommunications, 2023 On fifth-generation wireless networks, a potential massive MIMO system is used to meet the ever-increasing request for high-traffic data rates, high-resolution streaming media, and cognitive communication.
Ibrahim Salah +3 more
doaj +1 more source
On the Total Energy Efficiency of Cell-Free Massive MIMO [PDF]
IEEE Transactions on Green Communications and Networking, 2017 We consider the cell-free massive multiple-input multiple-output (MIMO) downlink, where a very large number of distributed multiple-antenna access points (APs) serve many single-antenna users in the same time-frequency resource.
H. Ngo +4 more
semanticscholar +1 more source
Cell-Free Massive MIMO in O-RAN: Energy-Aware Joint Orchestration of Cloud, Fronthaul, and Radio Resources [PDF]
IEEE Journal on Selected Areas in Communications, 2023 For the energy-efficient deployment of cell-free massive MIMO functionality in a practical wireless network, the end-to-end (from radio site to the cloud) energy-aware operation is essential. In line with the cloudification and virtualization in the open
Ozlem Tugfe Demir +3 more
semanticscholar +1 more source