Results 1 to 10 of about 32,294 (155)
Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1 [PDF]
Sensors, 2017 Global Navigation Satellite System (GNSS) signals can be exploited to remotely sense atmosphere and land and ocean surface to retrieve a range of geophysical parameters. This paper proposes two new methods, termed as power-summation of differential Delay-
Yongchao Zhu +3 more
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Cross-Domain OTFS Detection via Delay–Doppler Decoupling: Reduced-Complexity Design and Performance Analysis [PDF]
EntropyIn this paper, a reduced-complexity cross-domain iterative detection for orthogonal time frequency space (OTFS) modulation is proposed that exploits channel properties in both time and delay–Doppler domains.
Mengmeng Liu +3 more
doaj +2 more sources
IEEE Wireless Communications LettersThis letter is to introduce delay Doppler transform (DDT) for a time domain signal. It is motivated by the recent studies in wireless communications over delay Doppler channels that have both time and Doppler spreads, such as, satellite communication channels. We present some simple properties of DDT as well. The DDT study may provide insights of delay
Xiang-Gen Xia
exaly +3 more sources
Analysis of Spaceborne GNSS-R Delay-Doppler Tracking
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014 For spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R), the delay and Doppler frequency conditions dynamically change, so the compensation of the delay and Doppler errors using tracking is important to the altimetric and scatterometric performances.
Hyuk Park +2 more
exaly +4 more sources
Sentinel-3 Delay-Doppler altimetry over Antarctica [PDF]
The Cryosphere, 2019 The launch of Sentinel-3A in February 2016 represented the beginning of a new long-term series of operational satellite radar altimeters, which will provide Delay-Doppler altimetry measurements over ice sheets for decades to come.
M. McMillan +9 more
doaj +7 more sources
Rethink delay Doppler channels and time-frequency coding
Journal of Information and IntelligenceIn this paper, we rethink delay Doppler channels (also called doubly selective channels). We prove that no modulation schemes (including the current active VOFDM/OTFS) can compensate a non-trivial Doppler spread well. We then discuss some of the existing
Xiang-Gen Xia
doaj +3 more sources
OTFS-enabled integrated sensing and communication techniques for next-generation V2X networks
工程科学学报, 2023 The vehicle-to-everything (V2X) network has the potential to revolutionize the way we interact with vehicles and the surrounding. By utilizing innovative information and communication technologies, V2X networks can connect human beings, vehicles ...
Chunlei SUN, Linpei LI, Haijun ZHANG
doaj +1 more source
On the Pulse Shaping for Delay-Doppler Communications
GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023 In this paper, we study the pulse shaping for delay-Doppler (DD) communications. We start with constructing a basis function in the DD domain following the properties of the Zak transform. Particularly, we show that the constructed basis functions are globally quasi-periodic while locally twisted-shifted, and their significance in time and frequency ...
Shuangyang Li +5 more
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Enhanced Doppler Resolution and Sidelobe Suppression Performance for Golay Complementary Waveforms
Remote Sensing, 2023 An enhanced Doppler resolution and sidelobe suppression have long been practical issues for moving target detection using Golay complementary waveforms. In this paper, Golay complementary waveform radar returns are combined with a proposed processor, the
Jiahua Zhu +5 more
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On Delay-Doppler Plane Orthogonal Pulse
GLOBECOM 2022 - 2022 IEEE Global Communications Conference, 2022 This paper was presented at the IEEE GLOBECOM ...
Hai Lin 0001, Jinhong Yuan
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