Results 51 to 60 of about 78,274 (209)
Dynamic Multifunctional Metasurfaces Based on Passive Cascade Structure
Electron, EarlyView.A dynamic multifunctional metasurface is proposed in this paper. Unlike mainstream multifunctional metasurface based on programmable metasurfaces, it consists of two passive metasurfaces, presenting a significant cost advantage. By controlling the displacement, different functions such as beam steering, focusing, and OAM wave generation can be realized
Xiangming Wu +5 more
wiley +1 more source
On the transfer matrix of a MIMO system
, 2010 We develop a deterministic ab-initio model for the input-output relationship of a multiple-input multiple-output (MIMO) wireless channel, starting from the Maxwell equations combined with Ohm's Law.
Almers +12 more
core +3 more sources
Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology
InfoScience, EarlyView.Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang +3 more
wiley +1 more source
Sensors, 2021 The current wireless communication infrastructure has to face exponential development in mobile traffic size, which demands high data rate, reliability, and low latency.
Muddasar Naeem +2 more
doaj +1 more source
Frozen Differential Scattering in Reconfigurable Complex Media
Laser &Photonics Reviews, EarlyView.A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley +1 more source
SYNTHESIS ALGORITHM OF GEOMETRICAL STRUCTURE OF MIMO RADAR ANTENNA ARRAY
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 In the given work the algorithm of calculation of co-ordinates of elements of MIMO radar antenna is presented. Initial data for algorithm are the number of transmitting, receiving elements, and also demanded number of channels of receiving.
S. A. Gorshkov, P. I. Orgish
doaj
Low SNR Capacity of Noncoherent Fading Channels
, 2007 Discrete-time Rayleigh fading single-input single-output (SISO) and multiple-input multiple-output (MIMO) channels are considered, with no channel state information at the transmitter or the receiver. The fading is assumed to be stationary and correlated
Hajek, Bruce +3 more
core +4 more sources
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Cooperative MIMO Communication at Wireless Sensor Network: An Error Correcting Code Approach
Sensors, 2011 Cooperative communication in wireless sensor network (WSN) explores the energy efficient wireless communication schemes between multiple sensors and data gathering node (DGN) by exploiting multiple input multiple output (MIMO) and multiple input single ...
Mohammad Rakibul Islam, Young Shin Han
doaj +1 more source
MIMO System Setup and Parameter Estimation [PDF]
, 2008 There is a rat race in wireless communication to achieve higher spectral efficiency. One technique to achieve this is the use of multiple antenna systems i.e. MIMO systems.
Schiphorst, R. +3 more
core +2 more sources