Results 71 to 80 of about 1,345 (198)

Capacity of a communication channel with quadrature phase-shift keying and phase quantization

Учёные записки Казанского университета: Серия Физико-математические науки
The influence of the number of phase quantization levels L on the capacity CM,L of a communication channel with additive white Gaussian noise (AWGN) was studied in a communication system using QPSK (4-PSK).
Yu. A. Brychkov, N. V. Savischenko
doaj   +1 more source

A Parallelized 3D Geomechanical Solver for Fluid‐Induced Fault Slip in Poroelastic Media

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT We present a fully implicit formulation of coupled fluid flow and geomechanics for fluid injection/withdrawal in fractured reservoirs in the context of CO2$\textrm {CO}_2$ storage. Utilizing a Galerkin finite‐element approach, both flow and poroelasticity equations are discretized on a shared three‐dimensional mesh.
Emil Rinatovich Gallyamov, Guillaume Anciaux, Nicolas Richart, Jean‐François Molinari, Brice Lecampion   +4 more
wiley   +1 more source

A Novel Hybrid Cuckoo Search- Extreme Learning Machine Approach for Modulation Classification

IEEE Access, 2019
This paper presents a novel hybrid extreme learning machine (ELM) with cuckoo search algorithm (CSA) for the classification purposes of the digitally modulated signals, such as phase shift keying (PSK), frequency shift keying (FSK), and quadrature ...
Syed Ihtesham Hussain Shah, Sheraz Alam, Sajjad A. Ghauri, Asad Hussain, Faraz Ahmed Ansari   +4 more
doaj   +1 more source

Terrain Classification for Planetary Rovers Using Wireless In‐Wheel Sensor Modules and Machine Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Safe and reliable mobility over different kinds of ground is important for planetary rovers on space missions. Since terrain changes might affect the mobility of the rover, energy consumption, and safety, detecting the type of ground in real‐time is vital.
Md Masrul Khan, Sultan Shaharea, Manseeb M. Mannaf, Shihab Ahemed, Fahim Islam Anik, Md Jarir Hossain, Helal An Nahiyan, Sourav Karmaker   +7 more
wiley   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Estimation of BER from Error Vector Magnitude for Optical Coherent Systems

Photonics, 2016
This paper presents the estimation of bit error ratio (BER) from error vector magnitude (EVM) for M-ary quadrature amplitude modulation (QAM) formats in optical coherent systems employing carrier phase recovery with differential decoding to compensate ...
Irshaad Fatadin
doaj   +1 more source

Band‐Selective IR PRESS for Brain Tumor Spectroscopy Allows Robust Detection of Lactate

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
Lactate quantification by MRS is hindered by lipid signal overlap at 1.3 ppm, frequently forcing the use of long echo times that suppress other metabolites. We developed SPIR‐PRESS, a selective inversion recovery technique that suppresses lipids while preserving metabolite sensitivity.
Shun Kishimoto, Daniel R. Crooks, Peng Lu, Yuki Shibata, Olga Kim, Jeeva Munasinghe, Otowa Yasunori, Yamashita Kota, Kazutoshi Yamamoto, W. Marston Linehan, Jing Wu, Murali C. Krishna, Jeffrey R. Brender   +12 more
wiley   +1 more source

Fully signed quadrature space shift keying MIMO modulation

Ain Shams Engineering Journal
A novel multiple-input multiple-output (MIMO) space shift keying (SSK) modulation scheme, termed fully signed quadrature space shift keying (FSQ-SSK), is proposed in this paper.
Hany S. Hussein, Abdulrahman Al Ayidh, Ehab Mahmoud Mohamed, Hamada Esmaiel, Mohammed Farrag   +4 more
doaj   +1 more source

Demultiplexing in mode-division multiplexing system using multichannel blind deconvolution

IEEE Photonics Journal, 2016
We propose a mode demultiplexing method based on multichannel blind deconvolution (MBD) for a mode-division multiplexing (MDM) system. A 6 $\times$ 6 MDM transmission system is simulated to verify the performance of MBD.
Li Yan, Guijun Hu
doaj   +1 more source

System Integration and Field Testing of Low‐Cost Autonomous Platooning Platforms: Collision Avoidance Scenario

Journal of Field Robotics, Volume 43, Issue 2, Page 847-878, March 2026.
ABSTRACT This paper presents the development and validation of a scalable platooning system based on the predecessor‐following (PF) topology, designed for low‐cost follower platforms. It integrates key technologies such as localization, path planning, profile generation, and low‐level control to create a practical solution.
Dongwoo Seo, Jinhee Lee, Jaeyoung Kang
wiley   +1 more source