Large-scale antenna array techniques are key enablers for modern wireless communication systems. Channel state information (CSI) is indispensable large-scale multi-antenna systems, but challenging to obtain. To tackle this issue, in paper we propose a unified precoding and pilot design frame-work, that allows minimal precoding-sensitive modified CSI (mCSI) be collected. This results significant...

The multiple-input multiple-output (MIMO) characterization of a cable of twisted pairs merits attention and measurement for studies in ethernet in first mile (EFM) efforts. Quads or other groups of twisted pair within a cable may be combined for better transmission/duplexing: The interaction between lines within a subgroup or the entire cable can be exploited to improve performance and reduce t...

The channel state information (CSI) needs to be fed back from the user equipment (UE) base station (BS) in frequency division duplexing (FDD) multiple-input multiple-output (MIMO) system. Recently, neural networks are widely applied CSI compressed feedback since original overhead is too large for massive MIMO Notably, lightweight attract special attention due their practicality of deployment. H...

Abstract Duplexing plays important roles in the evolution of fold-and-thrust belts and accretionary wedges, causes internal shortening system, which then impacts both rates frontal advance seismic-moment deficit. Nevertheless, significance this has not yet been highlighted previous studies Himalaya or elsewhere. We invoke geometric solutions to constrain ratio transferred slip (R; i.e., updip d...

the main objective of this article is evaluation of the simplified models which have been developed for analysis and design of liquid storage tanks. the empirical formulas of these models for predicting maximum sloshing wave height (mswh) are obtained from mass spring models (msm). a finite element modeling (fem) tool is used for investigating the behavior the some selected liquid storage tanks...

abstract: application of atomic force microscope as a manipulator for pushing-based positioning of nano-particles has been of considerable interest during recent years. however a detailed modeling of the interaction forces and control on the afm tip is important for prosperous manipulation control, a reliable control of the afm tip position during the afm-based manipulation process is a main is...

Channel reciprocity greatly facilitates downlink precoding in time-division duplexing (TDD) multiple-input multiple-output communications without the need for channel state information feedback. Recently, reconfigurable intelligent surfaces (RISs) have emerged as a promising technology to enhance performance of future wireless networks. However, since artificial electromagnetic characteristics ...