Results 251 to 260 of about 17,709 (313)
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Enhancement of accuracy in OTF measurement
Applied Optics, 1987A knife-edge scanning method was developed to enhance the accuracy in OTF measurement. A slit image formed by the lens under test was scanned by a knife-edge which was moved by a stepping motor. It was possible to increase the signal-to-noise ratio with averaging 4-32 data at each point through a scan. The standard deviation was decreased to under 0.25%
K H, Hong, I W, Lee, H M, Cho, Y W, Lee
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OTFS Enabled LEO Satellite Communications: A Promising Solution to Severe Doppler Effects
IEEE NetworkWith the advantages of low cost and flexible deployment, low earth orbit satellite (LEO-Sat) communications have received widespread attentions, such as providing global wireless access with enhanced data rates in future 6G networks.
Jia Shi +6 more
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IEEE Wireless Communications Letters, 2021
The recently developed orthogonal time frequency space (OTFS) modulation has shown its capability of coping with the fast time-varying channels in high-mobility environments.
W. Yuan +4 more
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The recently developed orthogonal time frequency space (OTFS) modulation has shown its capability of coping with the fast time-varying channels in high-mobility environments.
W. Yuan +4 more
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Zak-OTFS With Spread Carrier Waveforms
IEEE Wireless Communications LettersZak-OTFS (orthogonal time frequency space) modulation is a communication framework that parameterizes the wireless channel in the delay-Doppler (DD) domain, where the parameters map directly to physical attributes of the scatterers that comprise the ...
Nishant Mehrotra +2 more
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Low Complexity MRC Detection for OTFS Receiver With Oversampling
IEEE Transactions on Wireless CommunicationsOrthogonal time-frequency space (OTFS) modulation shows superior performance in high-mobility wireless environments compared to orthogonal frequency division multiplexing (OFDM).
Preety Priya, E. Viterbo, Yi Hong
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IEEE Transactions on Wireless Communications, 2023
Orthogonal time frequency space (OTFS) is a promising alternative to orthogonal frequency-division multiplexing (OFDM) for high-mobility communications.
M. F. Keskin +5 more
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Orthogonal time frequency space (OTFS) is a promising alternative to orthogonal frequency-division multiplexing (OFDM) for high-mobility communications.
M. F. Keskin +5 more
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Emerging Trends in Radar: OTFS-Based Radar for Integrated Sensing and Communications Systems
IEEE Aerospace and Electronic Systems MagazineThis article offers a wide perspective of the research topic of orthogonal time–frequency space (OTFS)-based integrated radar–communication systems.
Aitor Correas-Serrano +3 more
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An Overview of OTFS for Internet of Things: Concepts, Benefits, and Challenges
IEEE Internet of Things Journal, 2022The Internet of Things (IoT) is envisioned to connect everything, spanning from terrestrial to nonterrestrial terminals, where reliable communication is expected to be allowed in both time-invariant and time-variant wireless channels.
Lixia Xiao +4 more
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Optical Engineering, 1975
A working group of the Japan Optical Engineering Research Association (JOERA) has been organized on April, 1974 and has made a start for making Japanese OTF standard by 1976. This working group will make the draft for OTF standard such as 1) optical systems to be applied, 2) definition of OTF and MTF, 3) standard graphical representation of OTF and MTF,
Teruji Ose, Kazumi Murata
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A working group of the Japan Optical Engineering Research Association (JOERA) has been organized on April, 1974 and has made a start for making Japanese OTF standard by 1976. This working group will make the draft for OTF standard such as 1) optical systems to be applied, 2) definition of OTF and MTF, 3) standard graphical representation of OTF and MTF,
Teruji Ose, Kazumi Murata
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IRS-Assisted High Mobility Communications Using OTFS Modulation
IEEE Wireless Communications Letters, 2023Intelligent reflecting surface (IRS) has emerged as a promising technology for fifth generation (5G) and beyond wireless networks that are expected to support high mobility applications. Supporting IRS-assisted high mobility communications is nonetheless
A. Bora, Khoa T. Phan, Yi Hong
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