Results 151 to 160 of about 33,426 (207)

Integration of Conventional Sensors and Laser Doppler Vibrometry for Structural Modal Analysis: An Innovative Approach. [PDF]

Sensors (Basel)
Martínez López E, García-Fernández N, Pelayo F, García Diéguez M, Aenlle M.   +4 more
europepmc   +1 more source

Diagnostic Performance of Ultrasound vs Ultrasound-Guided FNAC in Thyroid Nodules: Data From the ElaTION Trial.

J Clin Endocrinol Metab
Mehanna H, Nankivell P, Boelaert K, Woolley R, Sharma N, Sidhu PS, Madani G, Da Forno P, Moreman C, Palmer A, Fulton-Lieuw T, Taylor J, Rajaguru K, Bekker J, Vaidhyanath R, Rehman T, Deeks J.   +16 more
europepmc   +1 more source

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FDD-RT: A Simple CSI Acquisition Technique via Channel Reciprocity for FDD Massive MIMO Downlink

IEEE Systems Journal, 2018
We propose a channel state information acquisition mechanism to reduce the training overhead in frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) downlink (DL). While the massive MIMO has demonstrated the great potentials in many aspects, the carrier multiplexing designs in massive MIMO mostly adopt time-division ...
Wei-Ho Chung, Sy-Yen Kuo
exaly   +2 more sources

Directional Training for FDD Massive MIMO

IEEE Transactions on Wireless Communications, 2018
A key challenge for frequency-division duplexing (FDD) massive multi-input multi-output (MIMO) is the large overhead in acquiring channel state information (CSI) for transmits beamforming. In this paper, we propose a scalable method called directional training to obtain downlink CSI.
Xing Zhang, Lin Zhong, Ashutosh Sabharwal   +2 more
exaly   +2 more sources

FDDS: An Integrated Conceptual FDDS Framework for DDS Based Middleware

2019 International Conference on Communication and Electronics Systems (ICCES), 2019
Data Distribution Services (DDS) has changed the way of the development process for complex distributed systems by tightly coupling QoS policies for achieving desired functionality at execution time. DDS middleware can be configured to handle edge-to-edge quality of service (QoS) policies.
Mukesh Kumar, Awadhesh Kumar Singh
openaire   +1 more source

Efficient resource allocation for M2M half duplex FDD (H-FDD) systems

2013 Fifth International Conference on Ubiquitous and Future Networks (ICUFN), 2013
Machine to machine (M2M) communications among machines without human intervention have attracted more and more prominence due to high market potential in the near future. In this article, we propose a heuristic algorithm of allocating weighted per-user data rates for half duplex frequency division duplexing (H-FDD), and show how much performance gain ...
Jihwan P. Choi, Jaesub Shin, Jungwon Lee, Ji-Woong Choi   +3 more
openaire   +1 more source

Flexible duplex in FDD spectrum

2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017
In this paper, flexible frequency division duplex (FDD) and time division duplex (TDD) schemes are considered in FDD spectrum. With FDD spectrum, there is a paired uplink (UL) carrier with each downlink (DL) carrier, each carrier with the same bandwidth.
Krishna Balachandran, Joseph H. Kang, Kemal Karakayali, Kiran M. Rege   +3 more
openaire   +1 more source

UTRA/FDD RF Transceiver Requirements

Wireless Personal Communications, 2002
Unified RF requirements are derived for an UMTS Terrestrial Radio Access/Frequency Division Duplex (UTRA/FDD) compliant mobile transceiver. A set of transceiver requirements are proposed with consideration to system issues including duplex aspects. From these design-compatible requirements are proposed for each functional block in the transceiver.
Madsen, Per, Jensen, Ole Kiel, T., Amtoft, Reynisson, Ragnar Vidir, Mikkelsen, Jan Hvolgaard; id_orcid 0000-0003-2366-8831, Laursen, S., Kolding, T.E., Larsen, Torben; id_orcid 0000-0002-7378-5967, Jenner, Michael Bohl   +8 more
openaire   +3 more sources