IEEE

Instantaneous Frequency Estimation via Spectrogram Projection and P-Spline Approximation

Abstract: Frequency Modulated (FM) signals are usually characterized by two or more components having different waveforms and time-dependent frequencies. The estimation of the instantaneous frequency ...
SciTech Daily

Scientists Accidentally Create a “Rainbow Laser” on a Tiny Chip

A few years ago, researchers in Michal Lipson’s lab came across something unexpected. Their work at the time focused on improving LiDAR, a technology that measures distance using lightwaves. The team ...
C&EN

Design and Manufacturing of Piezoelectric Biomaterials for Bioelectronics and Biomedical Applications

Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR 999077, China Department of Mechanical Engineering, City University ...
InfoWorld

The best new features and fixes in Python 3.14

Official support for free-threaded Python, and free-threaded improvements Python’s free-threaded build promises true parallelism for threads in Python programs by removing the Global Interpreter Lock ...
Science Daily

Scientists accidentally create a tiny “rainbow chip” that could supercharge the internet

Researchers at Columbia have created a chip that turns a single laser into a “frequency comb,” producing dozens of powerful light channels at once. Using a special locking mechanism to clean messy ...
IEEE

A Deep Learning Model Based on Spectrogram Estimation and Wavelet Denoising for Spectrum Sensing in Cognitive Radio Systems

Abstract: Cognitive Radio (CR) has materialized as a pivotal technology in wireless communications, addressing spectrum scarcity by enabling dynamic spectrum access. A fundamental component of CR at ...