Results 11 to 20 of about 26,636 (252)
An OFDM based waveform for delay Doppler domain communication
, 2023 <p>This paper presents a new OFDM based modulation scheme for communication in doubly dispersive channels. We call this Delay-Doppler OFDM (DD-OFDM). Our waveform has the same sparse-channel benefits as orthogonal-time-frequency-space (OTFS) modulation, while offering advantages in terms of simpler channel estimation and lower out-of-band (OOB ...
Swaroop Gopalam +5 more
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Sparsity in the Delay-Doppler Domain for Measured 60 GHz Vehicle-to-Infrastructure Communication Channels [PDF]
2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019 We report results from millimeter wave vehicle-to-infrastructure (V2I) channel measurements conducted on Sept. 25, 2018 in an urban street environment, down-town Vienna, Austria. Measurements of a frequency-division multiplexed multiple-input single-output channel have been acquired with a time-domain channel sounder at 60 GHz with a bandwidth of 100 ...
Stefan Pratschner +11 more
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Robust Integrated Sensing and Communications in Delay-Doppler Domain Using Superimposed Training [PDF]
2023 IEEE Globecom Workshops (GC Wkshps), 2023 Emerging Sixth Generation (6G) communication network promises to operate in non-trivial high-mobility conditions and the integration of sensing capabilities, such as in vehicle-to-vehicle communications, high-speed trains and satellites. Or-thogonal time-frequency space (OTFS) is an appealing waveform capable of transmitting data to the users and, at ...
Lianet Méndez-Monsanto Suárez +3 more
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Auto-Encoder Based Orthogonal Time Frequency Space Modulation and Detection With Meta-Learning
IEEE Access, 2023 To tackle a Doppler sensitivity problem of orthogonal frequency division multiplexing (OFDM), orthogonal time frequency space (OTFS) has been investigated, where information is carried over delay-Doppler domain.
Jaehyun Park +3 more
doaj +1 more source
Sea Ice Transition Detection Using Incoherent Integration and Deconvolution
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Currently, reflectometry-based sea ice detection methods rely on observables extracted from delay-Doppler maps (DDM)s, which are sensitive to ice in the specular zone.
Benjamin J. Southwell +1 more
doaj +1 more source
IEEE Access, 2021 In the last few years, orthogonal time frequency space (OTFS) modulation has received significant attention as an alternative to OFDM especially for high mobilty scenarios.
Suvra Sekhar Das +3 more
doaj +1 more source
The Estimation Method of Sensing Parameters Based on OTFS
IEEE Access, 2023 In an integrated sensing and communication (ISAC) system, improving the accuracy of delay and Doppler shift sensing parameter estimation is a critical task that sustains the performance of the communication system. To tackle this task, we introduce a two-
Zhiling Tang +3 more
doaj +1 more source
Multiple Access in the Delay-Doppler Domain using OTFS modulation
CoRR, 2019 ITA'2019, San Diego, Feb ...
G. D. Surabhi +2 more
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Sparse channel estimation algorithms for OTFS system
IET Communications, 2022 Orthogonal time‐frequency space (OTFS) modulation, which has recently been proposed in the literature, is one of the promising techniques designed in the 2D Delay‐Doppler domain adapted to combat high Doppler fading channels.
Rabah Ouchikh +3 more
doaj +1 more source
Entropy, 2023 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.
Mi Zhang +6 more
doaj +1 more source