Results 91 to 100 of about 7,875,182 (223)
Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.Abstract A spectrally resolved observational methodology is introduced to estimate mesoscale momentum flux frequency spectra in the mesosphere and lower thermosphere (MLT). The method is applied to four‐dimensional wind fields reconstructed with the physics‐informed neural network approach called the Hydrodynamic Point‐wise Environment Reconstructor ...
G. Mitra +5 more
wiley +1 more source
Performance evaluation of mobile WiMAX with MIMO and relay extensions [PDF]
, 2007 The latest mobile WiMAX standard promises to deliver high data rates over extensive areas and to large user densities. More specifically, data rates are expected to exceed those of conventional cellular technologies.
Nix, AR, Bian, YQ, Sun, Y, Strauch, P
core +1 more source
Design of Large‐Aperture Hybrid Refractive Metalens System
Nanophotonics, Volume 15, Issue 18, 25 September 2026.An all‐germanium hybrid refractive–metalens system was constructed by integrating a planar Ge metalens with a single aspheric Ge lens, enabling compact wavefront correction in the LWIR band. The all‐Ge hybrid architecture simplifies conventional multi‐element infrared optics into a lightweight integrated imaging system while maintaining effective ...
Yinpeng Ma +9 more
wiley +1 more source
Joint Design of Space-Time Transmit and Receive Weights for Colocated MIMO Radar
Sensors, 2018 Compared with single-input multiple-output (SIMO) radar, colocated multiple-input multiple-output (MIMO) radar can detect moving targets better by adopting waveform diversity.
Ze Yu +3 more
doaj +1 more source
, 2011 A semi-blind adaptive space–time equaliser (STE) has recently been proposed based on a concurrent gradient-Newton(GN) constant modulus algorithm (CMA) and soft decision-directed (SDD) scheme for dispersive multiple-input multiple-output (MIMO) systems ...
Cheng, Huiting, Chen, Sheng
core +1 more source
Synchronisation Issues in Non-coherent MIMO Systems
In this article, we identify some of the key problems that may be encountered when designing Non-Coherent (NC) Multiple-Input Multiple-Output (MIMO) DownLink (DL) synchronisation schemes for communicating over multi-path fading channels.
Won, SeungHwan, Hanzo, Lajos
core +1 more source
Gain Bounds for Multiple Model Switched Adaptive Control of General MIMO LTI Systems
, 2008 For the class of MIMO minimal LTI systems controlled by an estimation based multiple model switched adaptive controller (EMMSAC), bounds are obtained for the closed loop lp gain, 1 ? p ?
Buchstaller, Dominic, French, Mark
core +2 more sources
Capacity of Magnetic-Induction MIMO Communication for Wireless Underground Sensor Networks
International Journal of Distributed Sensor Networks, 2015 In underground sensor networks, electronic magnetic waves undergo severe fading due to the challenging environment. Magnetic-induction (MI) communication is a promising alternative physical layer technique for underground sensor networks.
Song Li, Yanjing Sun, Wenjuan Shi
doaj +1 more source
A line-of-sight optimised MIMO architecture for outdoor environments [PDF]
, 2006 The authors present an investigation on the capacity of Line-of-Sight (LoS) optimised and conventional (narrow-spaced) Multiple-Input Multiple-Output (MIMO) communication systems in outdoor environments. Under a LoS scenario, the channel is normally rank
Sarris, I +4 more
core +1 more source