Results 241 to 250 of about 2,932,730 (333)

Middle meningeal artery embolization with surgical evacuation improves outcomes in chronic subdural hematoma: a multi-institutional and multinational database study. [PDF]

J Neurointerv Surg
Lakhani DA, Balar AB, Boo S, Bhatia S, Rai AT.   +4 more
europepmc   +1 more source

A fault-tolerant neutral-atom architecture for universal quantum computation. [PDF]

Nature
Bluvstein D, Geim AA, Li SH, Evered SJ, Bonilla Ataides JP, Baranes G, Gu A, Manovitz T, Xu M, Kalinowski M, Majidy S, Kokail C, Maskara N, Trapp EC, Stewart LM, Hollerith S, Zhou H, Gullans MJ, Yelin SF, Greiner M, Vuletić V, Cain M, Lukin MD.   +22 more
europepmc   +1 more source

Mental Health Professionals' Perceptions of Benefits and Disadvantages of Telehealth: International Mixed Methods Study.

J Med Internet Res
Montoya MI, Kogan CS, Khoury B, García-Pacheco JA, Robles R, Rebello TJ, Kulygina M, Reed GM.   +7 more
europepmc   +1 more source

A dynamic image encryption scheme through 2-D cellular automata and chaotic logistic map. [PDF]

Sci Rep
Abdul Y, Ramasamy V, Kukaram G, Boulaaras S, Alharbi A.   +4 more
europepmc   +1 more source

Unsupervised Characterization of Temporal Dataset Shifts as an Early Indicator of AI Performance Variations: Evaluation Study Using the Medical Information Mart for Intensive Care-IV Dataset.

JMIR Med Inform
Fernández-Narro D, Ferri P, Gutiérrez-Sacristán A, García-Gómez JM, Sáez C.   +4 more
europepmc   +1 more source

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Double Space–Time Line Codes

IEEE Transactions on Vehicular Technology, 2020
In this paper, an $M\times 4$ double space-time line code (D-STLC) is designed for a system with $M$-transmit and four-receive antennas whose channel state information is available at the transmitter.
Jingon Joung, Jihoon Choi, B. Jung
semanticscholar   +1 more source

Space-time block codes versus space-time trellis codes

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002
Two outstanding examples of transmit diversity schemes for the multiple-antenna flat-fading channel are space-time block coding (STBC) and space-time trellis coding (STTC). We compare the performance of STBC and STTC in terms of the frame error rate keeping the transmit power, spectral efficiency and number of trellis states fixed.
S. Sandhu, R. Heath, A. Paulraj
openaire   +1 more source

Universal space-time trellis codes

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2003
This article gives practical examples of space-time trellis codes performing as predicted by Root and Varaiya's (1968) compound channel theorem. Specifically, 32-state and 64-state 2/spl times/2 space-time trellis codes are presented that provide a bit-error rate (BER) of 10/sup -5/ on all 2/spl times/2 matrix channels with an excess mutual information
C. Kose, R.D. Wesel
openaire   +1 more source

Trace-Orthogonal Space-Time Coding

IEEE Transactions on Signal Processing, 2008
In this paper, we prove that, in MIMO systems affected by flat fading, when the channel is unknown at the transmitter and known at the receiver side, a space-time code does not induce any information loss, regardless of the channel realization, if and only if it is a trace-orthogonal design (TOD).
Antonio Fasano, BARBAROSSA, Sergio
openaire   +2 more sources