Results 81 to 90 of about 10,757 (229)
Benchmarking Organic Photodiodes at the Noise Floor
Advanced Optical Materials, Volume 14, Issue 6, 9 February 2026.A precise measurement framework based on a calibrated, ultra‐low‐noise automated setup with open‐source Python scripts enables accurate benchmarking of photodiodes. The unique combination of time‐dependent current measurement under dark conditions, followed by continuous‐wave faint illumination, facilitates reliable extraction of photocurrent near ...
Siddhartha Saggar +2 more
wiley +1 more source
Analysis of communication reliability in NarrowBand‐IoT oriented wireless sensor networks
IET Communications, 2021 The unstable link quality in wireless sensor networks (WSNs) directly affects the success rate of data transmission. The retransmission mechanism is one of the commonly used methods to solve this problem. However, too many retransmissions could lower the
Xingyu He +5 more
doaj +1 more source
Contactless Water Level Detection System for Pickling Barrels Using Image Recognition Technology
IEEE Access, 2023 Water level monitoring has long been an important task for farmers. Because weather conditions can change quickly, farmers have often checked that the water levels of their crops were ideal for good growing conditions.
Chi-Huang Hung +3 more
doaj +1 more source
Compact Optical Reservoir Computing via Luminescence Dynamics in Rare‐Earth Ions‐Doped Nanocrystals
Advanced Science, Volume 13, Issue 7, 3 February 2026.A functionally compact optical reservoir computing platform is demonstrated using rare‐earth ion‐doped nanocrystals, whose intrinsic nonlinear luminescence dynamics and multi‐timescale metastable states provide nonlinear mapping and fading memory without bulky delays or resonant structures.
Junyan Chen +7 more
wiley +1 more source
Communication‐Security Co‐Design for Federated Learning in Grant‐Free NOMA IoT Networks
IET Communications, Volume 20, Issue 1, January/December 2026.This article presents SA‐PPO, a Security‐Aware Proximal Policy Optimisation framework for federated learning over grant‐free NOMA (non‐orthogonal multiple access) in IoT networks. By jointly optimising access control, resource allocation, and trust‐weighted aggregation using cross‐layer indicators, SA‐PPO enhances both communication reliability and ...
Emmanuel Atebawone +5 more
wiley +1 more source
Insights into the Issue of Deploying a Private LoRaWAN
Sensors, 2022 The last decade has transformed wireless access technologies and crystallized a new direction for the internet of things (IoT). The modern low-power wide-area network (LPWAN) technologies have been introduced to deliver connectivity for billions of ...
Radek Fujdiak +4 more
doaj +1 more source
Understanding the limits of LoRaWAN
, 2017 The quick proliferation of LPWAN networks, being LoRaWAN one of the most adopted, raised the interest of the industry, network operators and facilitated the development of novel services based on large scale and simple network structures.
Adelantado, Ferran +5 more
core +3 more sources
Electronics Letters, Volume 62, Issue 1, January/December 2026.With the proliferation of Internet of Things (IoT) devices, broadband signal detection in low‐signal‐to‐noise ratio (SNR) non‐cooperative environments presents significant challenges. This letter proposes two lightweight modules integrated into the YOLOv8 framework, which effectively reduces computational complexity while improving detection accuracy ...
Deming Hu +4 more
wiley +1 more source
User Assignment with Distributed Large Intelligent Surface (LIS) Systems
, 2017 In this paper, we consider a wireless communication system where a large intelligent surface (LIS) is deployed comprising a number of small and distributed LIS-Units.
Chitti, Krishna +3 more
core +1 more source
Analysis of narrowband data transfer technologies on the Internet of Things (IoT) [PDF]
, 2021 Kh A Daudov +2 more
openalex +1 more source