Results 41 to 50 of about 823 (178)

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

Model-Driven Deep-Learning-Based Underwater Acoustic OTFS Channel Estimation

Journal of Marine Science and Engineering, 2023
Accurate channel estimation is the fundamental requirement for recovering underwater acoustic orthogonal time–frequency space (OTFS) modulation signals.
Yuzhi Zhang, Shumin Zhang, Yang Wang, Qingyuan Liu, Xiangxiang Li   +4 more
doaj   +1 more source

Analysis of Discrete-Time MIMO OFDM-Based Orthogonal Time Frequency Space Modulation [PDF]

, 2018
Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme designed in the Doppler-delay domain to fully exploit time and frequency diversity of general timevarying channels.
Arman Farhang, Behrouz Farhang-Boroujeny, Farhang, Arman, Farhang-Boroujeny, Behrouz, Chen, Rong Rong, Ahmad RezazadehReyhani, Rong Rong Chen, Ji, Mingyue, Mingyue Ji, Rezazadehreyhani, Ahmad   +9 more
core   +1 more source

The MIMO-OTFS Technique in the Next 6G Communications

Engineering Access
The orthogonal time-frequency space (OTFS) technique is a promising method of waveform modulation that encodes data in the delay-doppler (DD) domain. OTFS distinguishes itself from conventional multiplexing methods by employing two-dimensional modulation
Ali J. Ramadhan, Ali Taei Zadeh
doaj   +1 more source

Redox‐Active Guanidines

ChemElectroChem, Volume 13, Issue 12, 17 June 2026.
Redox‐active guanidines, comprising guanidino‐functionalized aromatics (GFAs) and redox‐active urea azines (RAAs), are electron donors and strong Lewis and Brønsted bases that are used in several applications. They act as redox‐active ligands in bistable coordination compounds and as reagents in dehydrogenative coupling reactions and proton‐coupled ...
Hans‐Jörg Himmel
wiley   +1 more source

Efficient signal detector design for OTFS with index modulation

Digital Communications and Networks
In this paper, efficient signal detectors are designed for Orthogonal Time Frequency Space (OTFS) modulation with Index Modulation (IM) systems. Firstly, the Minimum Mean Squared Error (MMSE) based linear equalizer and its corresponding soft-aided ...
Yezeng Wu, Lixia Xiao, Yiming Xie, Guanghua Liu, Tao Jiang   +4 more
doaj   +1 more source

Emerging Trends in Organic Photoreactions Utilizing Disulfides

European Journal of Organic Chemistry, Volume 29, Issue 21, 4 June 2026.
Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar, Bolormaa Bayarkhuu, Hong Y. Cho, Jeehye Byun   +3 more
wiley   +1 more source

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

Potential of Covalent Organic Framework in Pharmacy and Biomedicine: Influence of Structure on Properties and Applications

ChemMedChem, Volume 21, Issue 9, 14 May 2026.
From modular COF design to biomedical translation, this Review maps how linkage chemistry, topology, pore environment, and particle engineering govern bioperformance, therapeutic and diagnostic function, safety, and clinical readiness. Covalent organic frameworks (COFs) are a versatile class of crystalline porous materials with growing potential in ...
Julia Kolodziejczyk, Marta E. Plonska‐Brzezinska   +1 more
wiley   +1 more source

Deep Volumetric Super‐Resolution Imaging in Thick Biological Specimens With Sparse Scanning SIM

Advanced Science, Volume 13, Issue 25, 4 May 2026.
Sparse scanning structured illumination microscopy (SS‐SIM) extends the axial depth in super‐resolution fluorescence imaging by combining rapid laser scanning, pixel‐addressed intensity modulation, and sCMOS camera detection. SS‐SIM yields 1.6× lateral and 1.7× axial resolution gains over wide‐field microscopy and enables imaging through 300–600 µm ...
Sha An, Xuhong Guo, Zhongxia Cai, Yunze Lei, Kai Wen, Hongfei Suo, Xiaoyu Kong, Gerd Ulrich Nienhaus, Peng Gao   +8 more
wiley   +1 more source