Results 151 to 160 of about 144,334 (313)

SNR-EQ-JSCC: Joint Source-Channel Coding With SNR-Based Embedding and Query

open access: yesIEEE Wireless Communications Letters
Coping with the impact of dynamic channels is a critical issue in joint source-channel coding (JSCC)-based semantic communication systems. In this paper, we propose a lightweight channel-adaptive semantic coding architecture called SNR-EQ-JSCC. It is built upon the generic Transformer model and achieves channel adaptation (CA) by Embedding the signal ...
Hongwei Zhang 0006, Meixia Tao
openaire   +2 more sources

Study of Free‐Space Optical Quantum Network: Review and Prospectives

open access: yesAdvanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

SNR and Crosstalk Characterization.

open access: yes, 2015
a) Simulated tissue crosstalk comparison for three channel separation distances (5,6, and 7mm), the probe native resolution (6mm) is circled in red. b) The signal to noise ratio (SNR) as a function of wavelength averaged over all 49 channels. The SNR was
Jennifer Gallagher (755154)   +10 more
core   +1 more source

Fabrication of High‐Density Multimodal Neural Probes Based on Heterogeneously Integrated CMOS

open access: yesAdvanced Science, EarlyView.
A chiplet‐based methodology democratizes active neural probe development on standard bulk CMOS services. This yields the first probe combining high‐density electrophysiology (416 electrodes) with calcium imaging (832 photodiodes) and complete on‐chip signal processing across 13 shanks.
Ju Hee Mun   +10 more
wiley   +1 more source

SNR estimation method in turbo detection system

open access: yes, 2008
In this paper, the sensitivity of MAP algorithm and its reduced ones as Max-Log-MAP and Scaled Max-Log-Map to SNR mismatch in turbo detection systems are analyzed.
Li, Qiang, Li, Shao Qian, Mow, W. H.
core   +1 more source

Single‐Particle Mid‐Infrared Photothermal Imaging Reveals Hidden Heterogeneity in Real‐World Micro‐ and Nanoplastics

open access: yesAdvanced Science, EarlyView.
Mid‐infrared photothermal imaging enables multidimensional profiling of micro‐ and nanoplastics in bottled water. A total of 9.9 × 104 particles L−1 is detected, with 64% in the nanoscale regime. Spectral evolution, including peak narrowing and band shifts, reveals local chain reorganization in polyethylene terephthalate (PET), highlighting intrinsic ...
Xinyu Deng   +4 more
wiley   +1 more source

ROSAT PSPC Observation of the North East Region of the

open access: yes, 2008
We present the results of a 4 ksec ROSAT PSPC observation pointed toward the NE region of the Vela Supernova Remnant. The image counting statistics allowed to perform, for the first time, a spatially-resolved spectral analysis of the X-ray emission on an
Vela Snr Evidence
core  

and the SNR

open access: yes, 2002
The possible association of the supernova remnant (SNR) G 343.1-2.
D. C.-J. Bock, V. V. Gvaramadze
core   +1 more source

Magnetoelectric Nanoparticle‐Based Wireless Brain–Computer Interface: Underlying Physics and Projected Technology Pathway

open access: yesAdvanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang   +14 more
wiley   +1 more source

Performance Analysis and Optimization of Enterprise Wireless Networks Based on 802.11ax Technology

open access: yesSakarya University Journal of Computer and Information Sciences
This study focuses on performance analysis and optimization of enterprise wireless networks. Fundamental performance parameters of Wi-Fi networks such as signal strength, signal-to-noise ratio (SNR), data rate, and channel interference were evaluated in ...
İsmail Hakkı Cedimoğlu   +1 more
doaj   +1 more source

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