Results 51 to 60 of about 762 (245)

Channel Estimation and Iterative Decoding for Underwater Acoustic OTFS Communication Systems

Journal of Marine Science and Engineering
Orthogonal Time–Frequency Space (OTFS) is an innovative modulation method that ensures efficient and secure communication over a time-varying channel.
Lei Liu, Chao Ma, Yong Duan, Xinyu Liu, Xin Qing   +4 more
doaj   +1 more source

Beyond d‐Band Catalysis: A Critical Review and Descriptor Framework for Rare‐Earth Engineering in Lithium–Sulfur Batteries

Advanced Science, EarlyView.
Rare‐earth catalysts regulate lithium–sulfur battery chemistry through f‐orbital–mediated interactions, enabling simultaneous polysulfide adsorption and catalytic conversion on conductive carbon hosts. This synergistic control suppresses the shuttle effect, accelerates redox kinetics, and guides stable Li2S nucleation, providing a mechanistic framework
Fan Wang, Shihzad Shakil, Guozhi Wu, Jiarui Huang, Hanhui Lei, Terence Xiaoteng Liu   +5 more
wiley   +1 more source

Ordered Ionic‐Liquid Channels Enable Fast Anhydrous Proton Conduction at up to 240°C for Fuel Cells

Angewandte Chemie, EarlyView.
Infiltration of ionic liquids into a composite scaffold comprised of graphene and boron nitride nanosheets functionalised with positively charged polyethyleneimine produces robust proton conducting membranes for the intermediate temperature electrochemical devices.
Mazin Al‐Alawi, Kaiqiang He, Mattia Belotti, Fanmengjing Wang, Jiffin Oommen, Douglas R. MacFarlane, Hoang‐Long Du, Alexandr N. Simonov, Huanting Wang   +8 more
wiley   +2 more sources

Synchronization for Multiuser Uplink OTFS

2025 IEEE Wireless Communications and Networking Conference (WCNC)
In this paper, we propose time and frequency synchronization techniques for the uplink of multiuser orthogonal time frequency space (MU-OTFS) in high-mobility scenarios. We introduce a spectrally efficient and practical pilot pattern where each user utilizes a pilot with a cyclic prefix (PCP) within a shared pilot region on the delay-Doppler plane.
Mohsen Bayat, Sanoopkumar P. S., Arman Farhang   +2 more
openaire   +2 more sources

Beyond Electrostatics: Anion‐π+ Orbital Hybridization Underpins High‐Performance Chloride Storage in Poly(arylamine) Organic Cathodes

Advanced Science, EarlyView.
The fundamental nature of anion storage in p‐type organic cathodes is elucidated using rigid poly(arylamine) frameworks. This study reveals a hybrid covalent‐ionic mechanism for anion‐π+ interactions, driven by synergistic orbital hybridization and electrostatic attraction.
Tiantian She, Jiena Weng, Jie Wang, Qiao Xi, Yangyang Zhang, Zijie Zhang, Zongqiong Lin, Wei Huang   +7 more
wiley   +1 more source

Kinetic Analysis of Transmetalation at Prototypical Nickel(II) Catalyst Species: Rates, Mechanisms, and Implications for Catalysis

Angewandte Chemie, EarlyView.
A 31P{1H} NMR method enabling direct measurement of transmetalation at Ni(II) is disclosed, providing an extensive kinetic dataset. Rates span five orders of magnitude and exhibit strong ligand dependence, with monodentate ligands promoting transmetalation.
Nicholas S. D. Solomon, Xuechun Huang, Christopher Richardson, Sinead T. Keaveney   +3 more
wiley   +2 more sources

Survey of channel estimation method in delay-Doppler domain for OTFS

Tongxin xuebao, 2022
In order to provide reliable communication service for high-mobility scenarios, 6G can consider DD (delay-Doppler) domain based OTFS (orthogonal time frequency space) as its modulation scheme.By mapping the transmitted symbols onto DD domain and ...
Wang XING, Xiaogang TANG, Yiqing ZHOU, Chong ZHANG, Zhengang PAN   +4 more
doaj   +2 more sources

Wavelet-Aided OTFS: A 2-D Multicarrier Modulation Format for High-Mobility Communications

IEEE Open Journal of the Communications Society
This article proposes a wavelet-aided orthogonal time-frequency space (W-OTFS) modulation as a novel approach for high-mobility vehicular communication.
Mahmudul Hasan Abid, Iffat Ara Talin, Mohammad Abdul Matin, Mohammad Ismat Kadir   +3 more
doaj   +1 more source

OTFS modulation exploration for robust 6G communications in high mobility scenarios [PDF]

EPJ Web of Conferences
Orthogonal Time-frequency-space (OTFS) modulation represents a pioneering advancement, tailored to the requirements of prospective sixth-generation (6G) wireless networks.
Mohammadi Abderrahim, Dkiouak Aziz, Baghouri Mostafa, Chakkor Saad, El Oualkadi Ahmed, El Mamouni Anass   +5 more
doaj   +1 more source

Dynamically Modified Flexible Zn Powder Anodes with Stable Performance at High Rate and High Zn Utilization

Advanced Science, EarlyView.
A dynamically shape‐variant liquid metal‐based network is integrated into Zn powder electrode, where intrinsic fluidity and structural adaptability of the liquid metal‐based network enable effective mitigation of dendritic growth, alleviation of stress accumulation, and prevention of Zn loss during Zn plating‐stripping processes.
Yuxuan Wang, Chenhao Li, Wenbo Zhao, Yong Gao, Yiwei Liu, Yuhao Li, Yu Zhang, Yuhan Yao, Abdelnaby M. Elshahawy, Cao Guan   +9 more
wiley   +1 more source