Zobrazeno 1 - 10
of 987
pro vyhledávání: '"delay-doppler"'
Autor:
Guillem Foreman-Campins
Publikováno v:
Proceedings of the XXth Conference of Open Innovations Association FRUCT, Vol 36, Iss 1, Pp 188-194 (2024)
This paper analyses the achievable delay and Doppler estimation accuracies and the Multipath Error En- velopes (MEE) of Low Earth Orbit (LEO) Position-Navigation- Timing (PNT) systems, using the novel Orthogonal Time Fre- quency Space (OTFS) modulati
Externí odkaz:
https://doaj.org/article/6d1df313851745e795519563dadc500c
Publikováno v:
IET Radar, Sonar & Navigation, Vol 18, Iss 10, Pp 1919-1936 (2024)
Abstract It has become an interesting topic for modern radar possessing capabilities of polarimetric measurement, high‐resolution imaging, and good delay‐Doppler resolution. The linear frequency modulation (LFM) scheme is widely used in radar sys
Externí odkaz:
https://doaj.org/article/67a06b49141c492483b5054c836dcf34
Publikováno v:
Tongxin xuebao, Vol 45, Pp 229-243 (2024)
Orthogonal time frequency space (OTFS) modulation is a multiplexing technique designed in the two-dimensional (2D) delay-Doppler domain suited for high Doppler fading channels. OTFS converts a doubly-selective channel into an almost non-fading channe
Externí odkaz:
https://doaj.org/article/7a12b57948f142f9a2cd7351303e700b
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 35, Iss 1, Pp 1-11 (2024)
Abstract The delay-Doppler map (DDM) is the signal power distribution of the Coarse/Acquisition code (C/A code) of the received Global Navigation Satellite System (GNSS) signal in different code phase delay and Doppler frequency. When the received si
Externí odkaz:
https://doaj.org/article/5f3aaf85fd514407af71a371113d01a6
Autor:
Ali J. Ramadhan, Ali Taei Zadeh
Publikováno v:
Engineering Access, Vol 10, Iss 2, Pp 166-180 (2024)
The orthogonal time-frequency space (OTFS) technique is a promising method of waveform modulation that encodes data in the delay-doppler (DD) domain. OTFS distinguishes itself from conventional multiplexing methods by employing two-dimensional modula
Externí odkaz:
https://doaj.org/article/94bd93985a0546e89895c24b135687f8
Autor:
Swaroop Gopalam, Sibiraj B. Pillai, Philip Whiting, Hazer Inaltekin, Iain B. Collings, Stephen V. Hanly
Publikováno v:
IEEE Access, Vol 12, Pp 57879-57894 (2024)
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,
Externí odkaz:
https://doaj.org/article/922d268b1a1c4779af14efc684a084b1
Autor:
Cheng Jing, Weiqiang Li, Wei Wan, Feng Lu, Xinliang Niu, Xiuwan Chen, Antonio Rius, Estel Cardellach, Serni Ribó, Baojian Liu, Zhizhou Guo, Yang Nan
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 3, Pp 638-652 (2024)
In this paper, we will conclude the results of Bufeng-1 (BF-1) A/B data processing, calibration workflow, and validation of the calibrated sea surface winds, land surface soil moisture, and sea surface height measurements. Since 2019, the BF-1 missio
Externí odkaz:
https://doaj.org/article/5394b37f4fe449fda3add86cbb7096ea
Akademický článek
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Publikováno v:
IEEE Access, Vol 12, Pp 172429-172438 (2024)
In modern communication systems, managing the Peak-to-Average Power Ratio (PAPR) remains a critical challenge, particularly in Orthogonal Time-Frequency Space (OTFS) systems. PAPR significantly influences the efficiency and performance of these syste
Externí odkaz:
https://doaj.org/article/36347af26f9d4911aa20db9d339bfb38
Autor:
Zhiling Tang, Long Yu
Publikováno v:
IEEE Access, Vol 12, Pp 144044-144054 (2024)
The orthogonal time-frequency space (OTFS) modulation is resistant to double selective fading, making it a promising modulation scheme for next-generation integrated sensing and communication (ISAC) systems. Nonetheless, there exists a problem of mut
Externí odkaz:
https://doaj.org/article/7292c152f0dc43f294570cc4c03e234d