Results 61 to 70 of about 769 (214)

How to Combine OTFS and OFDM Modulations in Massive MIMO?

GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023
In this paper, we consider a downlink (DL) massive multiple-input multiple-output (MIMO) system, where different users have different mobility profiles. To support this system, we propose to use a hybrid orthogonal time frequency space (OTFS)/orthogonal frequency division multiplexing (OFDM) modulation scheme, where OTFS is applied for high-mobility ...
Ruoxi Chong, Mohammadali Mohammadi, Hien Quoc Ngo, Simon L. Cotton, Michail Matthaiou   +4 more
openaire   +3 more sources

Tunnel‐Framework Interphase Driving Rapid Zn2+ Diffusion for Long‐Life Zn Metal Anodes

Advanced Energy Materials, EarlyView.
The construction of an artificial interphase with 3D tunnel‐framework effectively suppresses interfacial water‐induced side reactions and dendrite growth. ABSTRACT Aqueous zinc‐ion batteries (AZIBs) are presently attracting considerable interest for large‐scale energy storage owing to their low cost and high safety.
Kunpeng Gao, Zhuo Li, Geoffrey I. N. Waterhouse, Ziyun Wang   +3 more
wiley   +1 more source

Partial and statistical CSI based precoding for reduced‐CP OTFS with inter‐slot‐interference pre‐cancellation

IET Communications, 2022
This work studies the precoding methods for the reduced cycle‐prefix (CP) orthogonal time frequency space (OTFS) modulation to simplify the receiver design.
Yuan Zhang, Peng Du, Jiang Wang
doaj   +1 more source

OTFS: A Potential Waveform for Space–Air–Ground Integrated Networks in 6G and Beyond

Telecom
6G is expected to provide ubiquitous connectivity, particularly in remote and inaccessible environments, by integrating satellite and aerial networks with existing terrestrial networks, forming Space–Air–Ground Integrated Networks (SAGINs).
Obinna Okoyeigbo, Xutao Deng, Agbotiname Lucky Imoize, Olamilekan Shobayo   +3 more
doaj   +1 more source

Modulation Classification for OTFS-NOMA in the presence of HPA Nonlinearity and Impulsive Noise [PDF]

Orthogonal Time Frequency Space (OTFS) is designed for high-speed communication scenarios where high-mobility users strain traditional bandwidth resources.
Rajatheva, Nandana, Maurya, Pawan, Latva-Aho, Matti, Bhatia, Vimal   +3 more
core   +1 more source

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

OTFS: A New Generation of Modulation Addressing the Challenges of 5G

CoRR, 2018
In this paper, we introduce a new 2D modulation scheme referred to as OTFS (Orthogonal Time Frequency & Space) that multiplexes information QAM symbols over new class of carrier waveforms that correspond to localized pulses in a signal representation called the delay-Doppler representation.
Ronny Hadani, Anton Monk
openaire   +2 more sources

Short-Term Prediction of Doubly-Dispersive Channels for Pulse-Shaped OTFS using 2D-ConvLSTM

, 2022
939944In this paper, we investigate the ability of recurrent neural networks to perform channel predictions for orthogonal time frequency and space modulation (OTFS).
Kasparick, Martin, Jung, Peter, Adrat, Marc, Pfadler, Andreas, Shala, Vlerar, Stanczak, Slawomir   +5 more
core   +1 more source

Codage polaire pour une modulation OTFS dans un canal à haute mobilité [PDF]

, 2020
Résumé : Avec l'augmentation de la demande de services à haut débit, les futures générations de communications mobiles doivent être spectraleement efficaces. Pour cela, on recourt de plus en plus à de nouvelles techniques de modulation et de codage. L’
Ait Chebib, Kahina, Lounici, Nadjet
core  

A Fixed‐Charge Interphase Synchronizes Ion Transport to Suppress Space‐Charge‐Driven Inefficiency Under Nanoliter Confinement

Angewandte Chemie International Edition, EarlyView.
Electrochemical energy storage breaks down under extreme miniaturization, where interfaces and space‐charge dominate device behavior. This work introduces a fixed‐charge selective interphase (FCSI) integrated into a twin‐tube micro‐Swiss‐roll architecture.
Yaping Yan, Jiachen Ma, Wenlan Zhang, Hongmei Tang, Yue Li, Ruhuai Mei, Yang Huang, Daniil Karnaushenko, Dmitriy D. Karnaushenko, Yumin Luo, Kai Zhang, Oliver G. Schmidt, Minshen Zhu   +12 more
wiley   +1 more source