Results 51 to 60 of about 159,611 (219)
On Secrecy Performance of MISO SWIPT Systems With TAS and Imperfect CSI [PDF]
IEEE Transactions on Communications, 2016 In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered.
Gaofeng Pan +6 more
openaire +5 more sources
Asynchronous Two-Way Relaying Networks Using Distributed Differential Space-Time Coding
International Journal of Antennas and Propagation, 2015 A signal detection scheme is proposed for two-way relaying network (TWRN) using distributed differential space-time coding (DDSTC) under imperfect synchronization.
Minjie Qian +3 more
doaj +1 more source
Advanced Science, EarlyView.Organosilicon micelles enable background‐free molecular magnetic resonance imaging (MRI) while remaining fully compatible with standard proton (1H) hardware. By exploiting a spectrally silent 1H window at ∼0 ppm, the silicone nanotracer allows hotspot detection by 1H chemical‐shift imaging (CSI) without metals or heteronuclei, enabling direct overlay ...
Martin Orsagh +4 more
wiley +1 more source
IEEE Open Journal of the Computer SocietyThe sixth-generation (6G) wireless technology recognizes the potential of reconfigurable intelligent surfaces (RIS) as an effective technique for intelligently manipulating channel paths through reflection to serve desired users. Full-duplex (FD) systems,
Li-Hsiang Shen +2 more
doaj +1 more source
IEEE Access, 2022 A frequency domain time-reversal (TR) precoder is proposed to perform physical layer security in single-input single-output (SISO) systems using orthogonal frequency-division multiplexing (OFDM) and artificial noise (AN) injection. This scheme guarantees
Sidney J. Golstein +4 more
doaj +1 more source
Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
Robust Rate Adaptation and Proportional Fair Scheduling With Imperfect CSI [PDF]
IEEE Transactions on Wireless Communications, 2015 10 pages, 12 figures, accepted for publication in IEEE Transactions on Wireless ...
Richard Fritzsche +2 more
openaire +3 more sources
Over-the-Air Computing with Imperfect CSI: Design and Performance Optimization
IEEE Transactions on Wireless Communications, 2023 <p>Over-the-air computing (AirComp) has recently attracted considerable attention as an efficient method of data fusion by integrating uncoded communication transmissions with computation thanks to the signal superposition offered by the multiple access channels.
Nikolaos, Evgenidis +3 more
openaire +2 more sources
International Journal of Telemedicine and Applications, 2012 In wireless healthcare monitoring systems, bandwidth allocation is an efficient solution to the problem of scarce wireless bandwidth for the monitoring of patients.
Di Lin, Fabrice Labeau
doaj +1 more source
Advanced Electronic Materials, EarlyView.Fully spray‐processed oxide thin‐film transistors are advanced by decoupling dielectric quality from contact energetics. Thermochemically densified MgO suppresses defect‐mediated leakage and improves electrostatic control, while an ultrathin YbOx interlayer induces a 1.67 eV work‐function shift that boosts mobility from ∼40 to ∼94 cm2 V−1 s−1.
Ahmed Mohamed +5 more
wiley +1 more source