Results 41 to 50 of about 20,641 (239)
Asynchronous Cell-Free Massive MIMO With Rate-Splitting [PDF]
IEEE Journal on Selected Areas in Communications, 2022 In practical cell-free (CF) massive multiple-input multiple-output (MIMO) networks with distributed and low-cost access points, the asynchronous arrival of signals at the user equipments increases multi-user interference that degrades the system ...
Jiakang Zheng +5 more
semanticscholar +1 more source
Making Cell-Free Massive MIMO Competitive With MMSE Processing and Centralized Implementation [PDF]
IEEE Transactions on Wireless Communications, 2019 Cell-free Massive MIMO is considered as a promising technology for satisfying the increasing number of users and high rate expectations in beyond-5G networks.
Emil Björnson, L. Sanguinetti
semanticscholar +1 more source
Cell-Free Massive MIMO for UAV Communications [PDF]
2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019 Submitted to 2019 ICC Workshop on "Integrating UAVs into 5G and Beyond"
D'Andrea C. +4 more
openaire +2 more sources
Cell-Free Massive MIMO Meets OTFS Modulation
IEEE Transactions on Communications, 2022 We provide the first-ever performance evaluation of orthogonal time frequency space (OTFS) modulation in cell-free massive multiple-input multiple-output (MIMO) systems. To investigate trade-off between performance and overhead, we apply embedded pilot-aided and superimposed pilot-based channel estimation methods.
Mohammadali Mohammadi +2 more
openaire +4 more sources
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
User-Centric Cell-Free Massive MIMO Networks: A Survey of Opportunities, Challenges and Solutions [PDF]
IEEE Communications Surveys and Tutorials, 2021 Densification of network base stations is indispensable to achieve the stringent Quality of Service (QoS) requirements of future mobile networks. However, with a dense deployment of transmitters, interference management becomes an arduous task.
Hussein A. Ammar +4 more
semanticscholar +1 more source
IEEE Access, 2021 A cell-free massive multiple-input multiple-output (MIMO) network-assisted full-duplex (NAFD) system has been proposed to satisfy the exploding demand of higher data transmission speed and more efficient communication.
Yanfeng Hu +3 more
doaj +1 more source
Local Partial Zero-Forcing Combining for Cell-Free Massive MIMO Systems [PDF]
IEEE Transactions on Communications, 2021 Cell-free massive multiple-input multiple-output (MIMO) provides more uniform spectral efficiency (SE) for users (UEs) than cellular technology. The main challenge to achieve the benefits of cell-free massive MIMO is to realize signal processing in a ...
Jiayi Zhang +3 more
semanticscholar +1 more source
Clustered Cell-Free Massive MIMO [PDF]
2018 IEEE Globecom Workshops (GC Wkshps), 2018 This paper introduces a novel technique, clustered cell-free massive-MIMO (C2F-M-MIMO), that generalizes the recently proposed cell-free massive MIMO (CF-M-MIMO) concept by optimizing the connectivity pattern among access points (APs) and mobile stations (MSs).
Felip Riera-Palou +3 more
openaire +1 more source
Cell-Free Massive MIMO Surveillance Systems
GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023 Wireless surveillance, in which untrusted communications links are proactively monitored by legitimate agencies, has started to garner a lot of interest for enhancing the national security. In this paper, we propose a new cell-free massive multiple-input multiple-output (CF-mMIMO) wireless surveillance system, where a large number of distributed multi ...
Mobini, Zahra +3 more
openaire +3 more sources