Results 261 to 270 of about 17,709 (313)

OTFS-Based ISAC for Super-Resolution Range-Velocity Profile

IEEE Transactions on Communications
The recently popularized ISAC paradigm attempts carry out both communication and sensing functionalities uses the same time-frequency resources to combat the scarcity of these resources. However, high-resolution range and velocity radars require wideband
Salah Eddine Zegrar, Hamza Haif, Hüseyin Arslan   +2 more
semanticscholar   +1 more source

Fractional Delay and Doppler Estimation for OTFS Based ISAC Systems

IEEE Wireless Communications and Networking Conference, 2023
In this paper, we consider an orthogonal time frequency space (OTFS) modulation based single input single output (SISO) radar for integrated sensing and communication (ISAC) where the transmitter sends OTFS frames and the radar receiver co-located with ...
Olivia Zacharia, V. Devi
semanticscholar   +1 more source

Off-Grid Channel Estimation Using Grid Evolution for OTFS Systems

IEEE Transactions on Wireless Communications
Orthogonal time frequency space (OTFS) as a newly proposed two-dimensional modulation scheme outperforms the orthogonal frequency division multiplexing in high-speed scenarios. Most recent studies focus on off-grid channel estimation with the ideal pulse
Yaru Shan, Fanggang Wang, Yaxing Hao, Jinghong Yuan, Jian Hua, Yu Xin   +5 more
semanticscholar   +1 more source

Wireless OTFS-Based Integrated Sensing and Communication for Moving Vehicle Detection

IEEE Sensors Journal
This article presents an approach for joint radar sensing and communications based on the orthogonal time–frequency space (OTFS) modulation, applied to a moving target detection during regular digital wireless transmission (TX).
Tomasz P. Zielinski, P. Karpovich, K. Abratkiewicz, R. Maksymiuk, P. Samczyński, Krzysztof Duda, Marek Wypich   +6 more
semanticscholar   +1 more source

Low-Overhead OTFS Transmission With Frequency or Time Domain Channel Estimation

IEEE Transactions on Vehicular Technology
Existing channel estimation techniques for orthogonal time frequency space (OTFS) transmission are mostly based on the pilots embedded in the two-dimensional delay-Doppler domain, which significantly increases the signaling overhead. In this paper, three
Hongyang Zhang, Xiaojing Huang, J. A. Zhang   +2 more
semanticscholar   +1 more source

Iterative LMMSE-SIC Detector for DSE-Aware Underwater Acoustic OTFS Systems

IEEE Transactions on Vehicular Technology
To cope with the extremely double-dispersive channels in underwater acoustic (UWA) communication, orthogonal time frequency space (OTFS) modulation has been regarded as a potential candidate since delay-Doppler symbols can fully utilize the time ...
Xuehan Wang, Xu Shi, Jintao Wang, Zhinan Sun   +3 more
semanticscholar   +1 more source

Optical OTFS is Capable of Improving the Bandwidth-, Power- and Energy-Efficiency of Optical OFDM

IEEE Transactions on Communications
We demonstrate that the proposed optical orthogonal time frequency space (O-OTFS) is capable of improving the bandwidth-/power-/energy-efficiencies of optical orthogonal frequency-division multiplexing (O-OFDM).
Chao Xu, Xiaoyu Zhang, P. Petropoulos, S. Sugiura, R. Maunder, Lie-liang Yang, Zhaocheng Wang, Jinghong Yuan, Harald Haas, L. Hanzo   +9 more
semanticscholar   +1 more source

A Novel Channel Estimation Scheme for OTFS

2020 IEEE 20th International Conference on Communication Technology (ICCT), 2020
Orthogonal time frequency space (OTFS) modulation is an emerging multicarrier technique designed in the delay-Doppler domain. It converts a time-varying channel into a 2D invariant channel in the delay-Doppler domain through 2D transformations, resulting in better performance gain over orthogonal frequency division multiplexing (OFDM) in high-mobility ...
Hang Zhao, Ziqi Kang, Hua Wang 0001
openaire   +1 more source

Wavelet-Aided OTFS for RIS-Assisted High-Mobility Wireless Channels

IEEE Wireless Communications Letters
Orthogonal time frequency space (OTFS) modulation and reconfigurable intelligent surface (RIS) are promising methods for next-generation wireless systems. We first incorporate the wavelet transform (WT) into the OTFS system.
Mahmudul Hasan Abid, Iffat Ara Talin, Mohammad Ismat Kadir   +2 more
exaly   +2 more sources

Achieving Better Accuracy With Less Computations: A Delay-Doppler Spectrum Matching Assisted Active Sensing Framework for OTFS Based ISAC Systems

IEEE Transactions on Wireless Communications
Orthogonal time frequency space (OTFS) modulation has been advocated as a promising waveform for achieving integrated sensing and communication (ISAC) due to its superiority in high-mobility adaptability and spectral efficiency.
Xiaochen Xia, Kui Xu, Yurong Wang, Youyun Xu, Wei Xie   +4 more
semanticscholar   +1 more source