Results 71 to 80 of about 1,194,201 (348)

Compression of interferometric radio-astronomical data

, 2016
The volume of radio-astronomical data is a considerable burden in the processing and storing of radio observations with high time and frequency resolutions and large bandwidths.
Offringa, A. R.
core   +1 more source

Engineering a Spin‐Orbit Bandgap in Graphene‐Tellurium Heterostructures

Advanced Functional Materials, EarlyView.
Tellurium intercalation in epitaxial graphene on Ir(111) enables the emergence of a spin–orbit‐induced bandgap with energy spin splitting. By combining STM, ARPES, spin‐resolved ARPES, and DFT, two structural phases are identified, both exhibiting tunable electronic doping.
Beatriz Muñiz Cano, Fabián Calleja, Daniela Pacilè, Marc G. Cuxart, Michele Pisarra, Antonello Sindona, Fernando Martín, Elena Salagre, Pilar Segovia, Enrique G. Michel, Amadeo. L. Vázquez de Parga, Rodolfo Miranda, Julio Camarero, Manuela Garnica, Miguel Angel Valbuena   +14 more
wiley   +1 more source

Bit Allocation Law for Multi-Antenna Channel Feedback Quantization: Single-User Case

, 2010
This paper studies the design and optimization of a limited feedback single-user system with multiple-antenna transmitter and single-antenna receiver. The design problem is cast in form of the minimizing the average transmission power at the base station
Khoshnevis, Behrouz, Yu, Wei
core   +3 more sources

Hardware-Limited Task-Based Quantization [PDF]

International Workshop on Signal Processing Advances in Wireless Communications, 2018
Quantization plays a critical role in digital signal processing systems. Quantizers are typically designed to obtain an accurate digital representation of the input signal, operating independently of the system task, and are commonly implemented using ...
Nir Shlezinger, Yonina C. Eldar, M. Rodrigues   +2 more
semanticscholar   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Synthesis of a measuring composite signal for assessing the security of speech signals during discrete-quantized transformation

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2020
The purpose of the work is to systematically analyze and generalize a high-precision measuring signal for assessing the security in leakage channels in high-level noise by discrete-quantized representation of speech signals using the principles of ...
V. K. Zheleznjak, S. V. Lavrov, A. G. Filipovich, M. M. Baranouski   +3 more
doaj   +1 more source

Envelope modeling for speech and audio processing using distribution quantization

European Signal Processing Conference, 2015
Envelope models are common in speech and audio processing: for example, linear prediction is used for modeling the spectral envelope of speech, whereas audio coders use scale factor bands for perceptual masking models.
Tobias Jähnel, Tom Bäckström, B. Schubert   +2 more
semanticscholar   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

Advanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang, Xingyue Yang, Zongmeng Yang, Jing Lu, Pin Ho, Wenhong Wang, Yee Sin Ang, Zhenxiang Cheng, Shibo Fang   +8 more
wiley   +1 more source

Accelerating Families of Fuzzy K-Means Algorithms for Vector Quantization Codebook Design

Sensors, 2016
The performance of signal processing systems based on vector quantization depends on codebook design. In the image compression scenario, the quality of the reconstructed images depends on the codebooks used.
Edson Mata, Silvio Bandeira, Paulo de Mattos Neto, Waslon Lopes, Francisco Madeiro   +4 more
doaj   +1 more source

A user's guide for the signal processing software for image and speech compression developed in the Communications and Signal Processing Laboratory (CSPL), version 1 [PDF]

, 1986
A complete documentation of the software developed in the Communication and Signal Processing Laboratory (CSPL) during the period of July 1985 to March 1986 is provided.
Farvardin, N., Kumar, P., Lin, F. Y., Vaishampayan, V.   +3 more
core   +1 more source