Results 121 to 130 of about 1,194,201 (348)

Advances in Mode (De)Multiplexing Technologies via Circularly Symmetric Structured Light Beams

Advanced Photonics Research, EarlyView.
This review presents a comprehensive overview of mode (de)multiplexing technologies using circularly symmetric structured light beams, encompassing strategies of beam splitter combinations, multiorder diffractive gratings, optical coordinate transformations, angular dispersion lenses, multilayer cascaded modulations, and multidimensional hybrid (de ...
Qingji Zeng, Shu Chen, Zhibin Wu, Junmin Liu, Huapeng Ye, Gaiqing Zhao, Dianyuan Fan, Shuqing Chen   +7 more
wiley   +1 more source

Forward Adaptive Dual-Mode Quantizer Based on the First-Degree Spline Approximation and Embedded G.711 Codec [PDF]

Radioengineering, 2019
In this paper, we propose a novel model of dual-mode quantizer that combines the restricted and unrestricted forward adaptive piecewise linear scalar quantizers based on the first degree-spline functions, one of them being forward adaptive G.711 ...
Z. Peric, J. Nikolic, B. Denic, V. Despotovic   +3 more
doaj  

Скрытная цифровая модуляция звуковых сигналов [PDF]

, 2014
Розроблені алгоритми вбудовування цифрових водяних знаків у звукові сигнали із збереженням норми сигналу. У якості параметру квантування застосовується коефіцієнт кореляції сигнального вектору і випадкової послідовності.
Shishkin, O. V., Шишкин, А. В., Шишкін, О. В.   +2 more
core  

Label‐Free, Sensitive, and Direct Detection of Cardiac Troponin Biomarkers Using Frequency‐Locked Microring Resonators

Advanced Sensor Research, EarlyView.
A deployable, chip‐integrated approach to the detection of heart attack biomarkers is demonstrated using silicon photonic microring resonators combined with microfluidics. By applying the Pound–Drever–Hall frequency locking technique, sensor signals are measured with improved signal‐to‐noise ratio, applying this to real‐time, selective readouts.
Evan Diamandikos, Tetsuya Shimogaki, Crispin Szydzik, Peter Thurgood, Luke H. Broadley, Sonya Palmer, Guanghui Ren, Thach G. Nguyen, Cesar S. Huertas, Arnan Mitchell   +9 more
wiley   +1 more source

Methods to Accelerate a Competitive Learning Algorithm Applied to VQ Codebook Desing

Trends in Computational and Applied Mathematics, 2010
. Codebook design plays a crucial role in the performance of signal pro-cessing systems based on vector quantization (VQ). This paper is concerned with methods for reducing the processing time spent by a competitive learning (CL) algorithm applied to VQ ...
E. L. Bispo Junior, C. R. B. Azevedo, W. T. A. Lopes, M. S. Alencar, F. Madeiro   +4 more
doaj   +1 more source

Goldstone solar system radar signal processing [PDF]

, 1992
A performance analysis of the planetary radar data acquisition system is presented. These results extend previous computer simulation analysis and are facilitated by the development of a simple analytical model that predicts radar system performance over
Jurgens, R., Sanchez, O., Satorius, E.
core   +1 more source

Soft Bioelectronic Interfaces for Continuous Peripheral Neural Signal Recording and Robust Cross‐Subject Decoding

Advanced Science, EarlyView.
A soft poly (3,4‐ethylenedioxythiophene):poly (styrenesulfonate)‐based electrode enables continuous, high‐quality recording of peripheral nerve activity. A neural network model integrating handcrafted and convolutional neural network‐based features decodes whisker movements with strong generalization, offering insights into peripheral nerve function ...
Liangpeng Chen, Yang Liu, Yewei Huang, Ziyang Li, Chao Zhang, Jun Tang, Xueyuan Ling, Bowen Cao, Baowang Li, Yuan Zhang, Wenjianlong Zhou, Qin Xu, Shunchang Ma, Xiudong Guan, Dan Xiao, Jingyao Geng, Yutong Zhao, Guolin Li, Yi‐xuan Wang, Wang Jia, Yuanwen Jiang, Milin Zhang, Deling Li   +22 more
wiley   +1 more source

When Less Is More $\ldots$ Few Bit ADCs in RF Systems

IEEE Access, 2019
Digitizing RF signals using few bit ADCs can provide system advantages in terms of reduced power dissipation, wider sampling bandwidth, and decreased demand for digital throughput. The diversity of established applications based on few bit ADCs, together
Christopher T. Rodenbeck, Matthew Martinez, Joshua B. Beun, Jose Silva-Martinez, Aydin Llker Karsilayan, Robert Liechty   +5 more
doaj   +1 more source

Anomalous Glassy Thermal Conductivity in a Perovskite Bismuthate Induced by Structural Dynamic Instability

Advanced Science, EarlyView.
Unraveling the underlying mechanisms at the origin of ultra‐low thermal conductivity in pristine crystals is of central relevance to designing new functional materials. Single crystals of the candidate functional material BaBiO3 show an anomalous glassy thermal conductivity, which reveals the role of strong anharmonicity and additional scattering ...
Alexandre Henriques, Mariana S. L. Lima, Gøran J. Nilsen, Matthias J. Gutmann, Steffen Wirth, Walber H. Brito, Valentina Martelli   +6 more
wiley   +1 more source

Enhanced Image Coding Scheme Based on Modified Embedded Zerotree Wavelet Transform (DMEZW)

Science Journal of University of Zakho, 2017
In this paper the proposed scheme uses different processing methods by applying Integer Lifting Wavelet Transform (ILWT) on gray scale image generating four subband is presented.
Diyar W.N. Waysi, Adnan M.A. Brifcani
doaj   +1 more source