Results 71 to 80 of about 40,584 (234)

Ionospheric Density Variations Observed by the Radio Receiver Instrument on e‐POP/Swarm‐E

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Ionospheric density variations can be inferred by studying the effects of electron density structures on transionospheric High Frequency (HF) radio wave propagation. The Radio Receiver Instrument (RRI) on the Enhanced Polar Outflow Probe (e‐POP)/Swarm‐E is used to detect HF radio waves during transionospheric experiments conducted between the ...
E. C. Kalafatoglu Eyiguler, D. W. Danskin, G. C. Hussey, R. G. Gillies, A. G. Burrell, A. J. Coster, K. Pandey, A. W. Yau   +7 more
wiley   +1 more source

Sistem Modulator dan Demodulator BPSK dengan Costas Loop

Techne, 2015
Pada tulisan ini akan dibahas suatu sistem transmisi data berbasis BPSK (Binary Phase Shift Keying) menggunakan Costas Loop pada demodulatornya. Pada prinsipnya Costas Loop adalah bentuk khusus dari PLL yang difungsikan untuk melakukan demodulasi sinyal ...
Budihardja Murtianta
doaj   +1 more source

Enhanced Efficiency BPSK Demodulator Based on One-Dimensional Convolutional Neural Network

IEEE Access, 2018
In this paper, a novel binary phase shift keying demodulator based on 1-D convolutional neural network (1-D CNN) is proposed. The utilization of neural networks to detect the locations of phase shifts in the modulated data distinguishes the proposed ...
M. Zhang, Zongyan Liu, Li Li, Hai Wang
semanticscholar   +1 more source

Revealing Chronotypes Across Aquatic Species Using Acoustic Telemetry

Fish and Fisheries, Volume 26, Issue 6, Page 1134-1145, November 2025.
ABSTRACT Acoustic telemetry offers valuable opportunities to investigate individual variability in circadian‐related and other behaviours and how environmental cues shape these patterns in wild fish populations. However, this potential has not yet been fully exploited.
Martina Martorell‐Barceló, David Abecasis, Mourad Akaarir, Alexandre Alonso‐Fernández, Robert Arlinghaus, Eneko Aspillaga, Margarida Barcelo‐Serra, Niels W. P. Brevé, Jan G. Davidsen, Antoni Gamundí, Amalia Grau, Bernat Hereu, Ivan Jarić, Andrzej Kapusta, Sue Lowerre‐Barbieri, Christopher T. Monk, Anja K. Nickel, María C. Nicolau, Guðbjörg Á. Ólafsdóttir, Esben M. Olsen, Renanel Pickholtz, Marie Prchalová, Jan Reubens, Milan Říha, Inge van der Knaap, Pieterjan Verhelst, David Villegas‐Ríos, Josep Alós   +27 more
wiley   +1 more source

All-optical pattern matching system of 42 Gbit/s 4-bit BPSK signals and its demonstration for optoelectronic firewall

Tongxin xuebao, 2022
To achieve the all-optical pattern matching for optoelectronic firewall which could process high-speed optical signals efficiently, a BPSK all-optical pattern recognition system with the data rate up to 42 Gbit/s was proposed and demonstrated by ...
Qihan ZHANG, Xiaoxue GONG, Rui LI, Xin LI, Shanguo HUANG, Lei GUO   +5 more
doaj   +2 more sources

Error-free transmission of microring-modulated BPSK

Optics Express, 2012
We demonstrate the generation of error-free binary-phase-shift-keyed (BPSK) data at 5 Gb/s using a silicon microring modulator. The microring-modulated BPSK signal is propagated at fiber lengths up to 80 km, maintaining error-free performance, while demonstrating resilience to chromatic dispersion. Bit-error-rate measurements and eye diagrams show near
Kishore, Padmaraju, Noam, Ophir, Qianfan, Xu, Bradley, Schmidt, Jagat, Shakya, Sasikanth, Manipatruni, Michal, Lipson, Keren, Bergman   +7 more
openaire   +2 more sources

Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration

Italian National Conference on Sensors, 2017
A surface acoustic wave based passive temperature sensor capable of multiple access is investigated. Binary Phase Shift Keying (BPSK) codes of eight chips were implemented using a reflective delay line scheme on a Y-Z LiNbO3 piezoelectric substrate.
C. Fu, Yabing Ke, Min Li, Jingting Luo, Honglang Li, G. Liang, P. Fan   +6 more
semanticscholar   +1 more source

Two‐Way Relaying for Orbital Angular Momentum LOS Transmission

International Journal of Communication Systems, Volume 38, Issue 13, 10 September 2025.
This paper investigates two‐way relaying (TWR) for orbital angular momentum (OAM)‐based line‐of‐sight (LOS) transmission. Low‐complexity near‐ML detectors are proposed for OAM mode division multiplexing and index modulation. Theoretical analysis and simulations confirm that TWR significantly improves bit error performance and spectral efficiency over ...
Oluwabukunmi Williams Oso, Narushan Pillay, Hongjun Xu   +2 more
wiley   +1 more source

Multi-user Communication in Difficult Interference

, 2019
The co-channel interference (CCI) is one of the major impairments in wireless communication. CCI typically reduces the reliability of wireless communication links, but the difficult CCI which is no more or less strong to the desired signals destroys ...
Basnayaka, Dushyantha A., Ratnarajah, Tharmalingam   +1 more
core   +1 more source

Improved SNR estimation for BPSK and QPSK signals

Electronics Letters, 2009
A novel non-data-aided SNR estimation technique for BPSK and QPSK modulations in complex additive white Gaussian noise (AWGN) is proposed. It uses the constant amplitude property of in-phase and quadrature components of these modulations to achieve an improved performance.
Evans, BG, Ijaz, I, Awoseyila A
openaire   +4 more sources