Results 1 to 10 of about 25,102 (256)
Mathematics, 2023 Massive MIMO systems can support a large number of Internet of Things (IoT) devices, even if the number of IoT devices exceeds the number of service antennas in a single base station (BS) located at the data center. In order to improve the performance of
Byung Moo Lee
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Multiantenna NOMA with Finite Blocklength: A Pragmatic Paradigm for Ultra-Dense Networking [PDF]
EntropyThis paper addresses the design and performance analysis of nonorthogonal multiple access (NOMA) for ultra-dense networking of the Internet of Things (IoT) based on low-power sensors.
Haoming Wang +3 more
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Massive Connectivity With Massive MIMO—Part II: Achievable Rate Characterization [PDF]
IEEE Transactions on Signal Processing, 2018 This two-part paper aims to quantify the cost of device activity detection in an uplink massive connectivity scenario with a large number of devices but device activities are sporadic. Part I of this paper shows that in an asymptotic massive multiple-input multiple-output (MIMO) regime, device activity detection can always be made perfect.
Liang Liu, Liang Liu, Wei Yu
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Massive MIMO for Internet of Things (IoT) connectivity [PDF]
Physical Communication, 2019 Massive MIMO is considered to be one of the key technologies in the emerging 5G systems, but also a concept applicable to other wireless systems. Exploiting the large number of degrees of freedom (DoFs) of massive MIMO essential for achieving high spectral efficiency, high data rates and extreme spatial multiplexing of densely distributed users. On the
Petar Popovski +2 more
exaly +5 more sources
Towards Massive Connectivity Support for Scalable mMTC Communications in 5G Networks
IEEE Access, 2018 The fifth generation of cellular communication systems is foreseen to enable a multitude of new applications and use cases with very different requirements.
Carsten Bockelmann +18 more
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Quantitative characterization of pore development and its application in shale oil reservoirs of the Qingshankou formation, Songliao basin [PDF]
Scientific ReportsThe pronounced multi-scale heterogeneity and complex wettability heterogeneity of shale oil reservoirs are key factors governing the distribution and flow behavior of fluids within the pore network. This study focuses on the Qingshankou Formation, Member
Boyang Wang, Mengjing Yin, Dengfu Yuan
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Massive Connectivity With Massive MIMO—Part I: Device Activity Detection and Channel Estimation [PDF]
IEEE Transactions on Signal Processing, 2018 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 are active.
Liang Liu, Liang Liu, Wei Yu
exaly +3 more sources
Deterministic Massively Parallel Connectivity [PDF]
SIAM Journal on Computing, 2022 We consider the problem of designing fundamental graph algorithms on the model of Massive Parallel Computation (MPC). The input to the problem is an undirected graph $G$ with $n$ vertices and $m$ edges, and with $D$ being the maximum diameter of any connected component in $G$.
Sam Coy, Artur Czumaj
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Massive haemoptysis: an unusual connection [PDF]
Thorax, 2021 A 60-year-old man presented with a 4-day history of small volume haemoptysis. His medical history revealed a pericardiectomy with pericardial window creation for severe constrictive pericarditis secondary to seropositive rheumatoid arthritis in 1997 and pulmonary tuberculosis aged 7, with a treated recurrence in 2005.
Aimee, Leadbetter +3 more
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Distributed Optimization for Massive Connectivity [PDF]
IEEE Wireless Communications Letters, 2020 Massive device connectivity in Internet of Thing (IoT) networks with sporadic traffic poses significant communication challenges. To overcome this challenge, the serving base station is required to detect the active devices and estimate the corresponding channel state information during each coherence block.
Yuning Jiang 0002 +3 more
openaire +2 more sources