Zobrazeno 1 - 10
of 274
pro vyhledávání: '"Fredrik, Tufvesson"'
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 6, Pp 1455-1464 (2024)
One of the required communication solutions to support novel use cases, e.g., in industrial environments, for 5G systems and beyond is ultra-reliability low-latency communication (URLLC). An enabling technology for URLLC is massive multiple-input mul
Externí odkaz:
https://doaj.org/article/ce56531bdada4ca29f2748c49128be70
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 6959-6971 (2024)
The handover (HO) procedure is one of the most critical functions in a cellular network driven by measurements of the user channel of the serving and neighboring cells. The success rate of the entire HO procedure is significantly affected by the prep
Externí odkaz:
https://doaj.org/article/b9beaa35b25e4856af9bb4ac420e6915
Publikováno v:
Sensors, Vol 24, Iss 5, p 1385 (2024)
Many concepts for future generations of wireless communication systems use coherent processing of signals from many distributed antennas. The aim is to improve communication reliability, capacity, and energy efficiency and provide possibilities for n
Externí odkaz:
https://doaj.org/article/f17804a00a444cc2a68756e2ceaca71f
Autor:
Harris, Paul, Malkowsky, Steffen, Vieira, Joao, Hassan, Fredrik Tufvesson Wael Boukley, Liu, Liang, Beach, Mark, Armour, Simon, Edfors, Ove
The first measured results for massive MIMO performance in a line-of-sight (LOS) scenario with moderate mobility are presented, with 8 users served in real-time using a 100-antenna base Station (BS) at 3.7 GHz. When such a large number of channels dy
Externí odkaz:
http://arxiv.org/abs/1701.08818
Autor:
Gilles Callebaut, Sara Willhammar, Andrea P. Guevara, Anders J. Johansson, Liesbet Van Der Perre, Fredrik Tufvesson
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 2195-2204 (2021)
IoT networks are getting overcrowded following the vast increase in number of Internet-of-Things (IoT) devices and connections. Networks can be extended with more gateways, increasing the number of supported devices. However, as investigated in this
Externí odkaz:
https://doaj.org/article/efef6ca97eec4c20a1dcfc55e2747f3f
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 1, Pp 501-512 (2020)
Reliability is becoming increasingly important for many applications envisioned for future wireless systems. A technology that could improve reliability in these systems is massive MIMO (Multiple-Input Multiple-Output). One reason for this is a pheno
Externí odkaz:
https://doaj.org/article/383e0b8aacc941e29c98c7f5cca5fa87
Autor:
Marco Antonio Marques Marinho, Alexey Vinel, Fredrik Tufvesson, Felix Antreich, Joao Paulo Carvalho Lustosa Da Costa, Edison Pignaton De Freitas
Publikováno v:
IEEE Access, Vol 8, Pp 110073-110081 (2020)
Smart vehicles are emerging as a possible solution for multiple concerns in road traffic, such as mobility and safety. This work presents radio localization methods based on simultaneous direction of arrival (DOA), time-delay, and range estimation us
Externí odkaz:
https://doaj.org/article/2e576e861e0f4bc08ecc4ab47af0add1
Publikováno v:
IEEE Access, Vol 6, Pp 13555-13564 (2018)
Spatially distributed transmission points connected to the same source, known as distributed antenna systems, can improve system performance compared with single-link traditional systems. However, the anticipated gain depends heavily on the cross-cor
Externí odkaz:
https://doaj.org/article/d3de9d1354e34a0493430825b34fc397
Publikováno v:
IEEE Access, Vol 6, Pp 40253-40266 (2018)
We investigate the ability of Massive multiple-input multiple-output (MIMO) systems to spatially separate up to eighteen users located close to one another in line-of-sight (LOS) propagation conditions, in both indoor and outdoor environments. For th
Externí odkaz:
https://doaj.org/article/2c0b7850323e4420bc6e18e668137d87
Autor:
Steffen Malkowsky, Joao Vieira, Liang Liu, Paul Harris, Karl Nieman, Nikhil Kundargi, Ian C. Wong, Fredrik Tufvesson, Viktor Owall, Ove Edfors
Publikováno v:
IEEE Access, Vol 5, Pp 9073-9088 (2017)
This paper sets up a framework for designing a massive multiple-input multiple-output (MIMO) testbed by investigating hardware (HW) and system-level requirements, such as processing complexity, duplexing mode, and frame structure. Taking these into a
Externí odkaz:
https://doaj.org/article/c72264dd8fbc421bbd72154a408a8193