Results 41 to 50 of about 1,856,502 (376)

Multiple-Input-Multiple-Output Filtered Multitone Time Reversal Acoustic Communications Using Direct Adaptation-Based Turbo Equalization

open access: yesSensors, 2023
This paper proposes using direct adaptation (DA)-based turbo equalization in multiple-input-multiple-output (MIMO) filtered multitone (FMT) time reversal (TR) acoustic communications to jointly suppress noise, residual co-channel interference (CCI) and ...
Lin Sun, Haisen Li
doaj   +1 more source

Molecular effects in the ionization of N$_2$, O$_2$ and F$_2$ by intense laser fields [PDF]

open access: yes, 2004
In this paper we study the response in time of N$_2$, O$_2$ and F$_2$ to laser pulses having a wavelength of 390nm. We find single ionization suppression in O$_2$ and its absence in F$_2$, in accordance with experimental results at $\lambda = 800$nm ...
C. A. Ullrich   +5 more
core   +1 more source

Active Blanket Jamming Suppression Method for Spaceborne SAR Images Based on Regional Feature Refinement Perceptual Learning

open access: yesLeida xuebao
Spaceborne Synthetic Aperture Radar (SAR) systems are often subject to strong electromagnetic interference, resulting in imaging quality degradation. However, existing image domain-based interference suppression methods are prone to image distortion and ...
Lin NIE   +7 more
doaj   +1 more source

Inter-tier Interference Suppression in Heterogeneous Cloud Radio Access Networks

open access: yes, 2015
Incorporating cloud computing into heterogeneous networks, the heterogeneous cloud radio access network (H-CRAN) has been proposed as a promising paradigm to enhance both spectral and energy efficiencies. Developing interference suppression strategies is
Cheng, Yuanyuan   +4 more
core   +1 more source

On Phase Noise Suppression in Full-Duplex Systems [PDF]

open access: yes, 2014
Oscillator phase noise has been shown to be one of the main performance limiting factors in full-duplex systems. In this paper, we consider the problem of self-interference cancellation with phase noise suppression in full-duplex systems. The feasibility
Ahmed, Elsayed, Eltawil, Ahmed M.
core   +1 more source

CARNet: An effective method for SAR image interference suppression

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Synthetic aperture radar (SAR) routinely confronts the interference of radiofrequency devices in normal missions, causing ineffective imaging and seriously affecting Earth observation capability. In general, it is a great challenge to ensure interference
Shunjun Wei   +5 more
doaj   +1 more source

Dark state suppression and narrow fluorescent feature in a laser-driven lambda atom

open access: yes, 2002
We discuss quantum interference effects in a three-level atom in lambda-configuration, where both transitions from the upper state to the lower states are driven by a single monochromatic laser field.
Agarwal   +30 more
core   +3 more sources

Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) systems are highly sensitive to interference, making interference suppression a critical concern. While significant research has been conducted on SAR interference suppression using parametric, nonparametric, semiparametric
Lunhao Duan   +8 more
doaj   +1 more source

Interference suppression for the LTE uplink

open access: yesPhysical Communication, 2013
Abstract Interference cancellation is expected to have significant importance for next-generation wireless communication systems due to various co-channel deployment scenarios and denser frequency reuse. In this study, an interference cancellation receiver that exploits the unique characteristics of single-carrier frequency-division multiple access ...
Ismail Guvenc   +3 more
openaire   +3 more sources

Macrospin Tunneling and Magnetopolaritons with Nanomechanical Interference

open access: yes, 2011
We theoretically address the quantum dynamics of a nanomechanical resonator coupled to the macrospin of a magnetic nanoparticle by both instanton and perturbative approaches.
A. Perelomov   +4 more
core   +2 more sources

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