Results 31 to 40 of about 491,261 (311)
IEEE Photonics Journal, 2023 A doppler delay-time frequency (DD-TF) cross-domain high-security transmission scheme based on orthogonal time frequency space (OTFS) is proposed, which is compatible with high-speed and large-capacity optical transmission systems.
Zhiruo Guo +9 more
doaj +1 more source
Co-Efficient Vector Based Differential Distributed Quasi-Orthogonal Space Time Frequency Coding
Sensors, 2023 Distributed space time frequency coding (DSTFC) schemes address problems of performance degradation encountered by cooperative broadband networks operating in highly mobile environments.
Nnamdi Nwanekezie +3 more
doaj +1 more source
IEEE Transactions on Wireless Communications, 2021 The orthogonal-time-frequency-space (OTFS) modulation has emerged as a promising modulation scheme for high mobility wireless communications. To harvest the time and frequency diversity promised by OTFS, some promising detectors, especially message ...
Zhengdao Yuan +5 more
semanticscholar +1 more source
IEEE Access, 2023 Orthogonal time frequency space (OTFS) has emerged as a promising modulation for next-generation wireless systems. This two-dimensional (2D) modulation has the inherent capability of providing uninterrupted connectivity and improved performance in a high-
Mahmudul Hasan Abid +2 more
doaj +1 more source
Differential space-time block-coded OFDMA for frequency-selective fading channels [PDF]
, 2003 Combining differential Alamouti space-time block code (DASTBC) with orthogonal frequency-division multiple access (OFDMA), this paper introduces a multiuser/multirate transmission scheme, which allows full-rate and full-diversity noncoherent ...
Cai, W, Chen, Z, Ni, Q, Zhu, G
core +1 more source
OTFS - Orthogonal Time Frequency Space
CoRR, 2016 In this paper we introduce a new 2D modulation technique called OTFS (Orthogonal Time Frequency & Space) that transforms information carried in the Delay-Doppler coordinate system to the familiar time-frequency domain utilized by traditional modulation schemes such as OFDM, CDMA and TDMA. OTFS converts the fading, time-varying wireless channel into
Anton Monk +3 more
openaire +2 more sources
Orthogonal Time Frequency Space Modulation
CoRR, 2018 13 pages, 9 ...
Ronny Hadani +10 more
openaire +2 more sources
Orthogonal Time Frequency Space Modulation—Part I: Fundamentals and Challenges Ahead [PDF]
IEEE Communications Letters, 2022 This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks.
Zhiqiang Wei +4 more
semanticscholar +1 more source
The Orthogonal Time Frequency Space (OTFS) Technique In 6G Wireless Communications [PDF]
BIO Web of ConferencesThe orthogonal time-frequency space (OTFS) technique is a potential waveform modulation method that modulates data in the delaydoppler (DD) domain. OTFS differs from traditional multiplexing techniques by utilizing two-dimensional modulation to switch ...
Ramadhan Ali J., TaeiZadeh Ali
doaj +1 more source
Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis [PDF]
, 2018 We consider the frequency domain form of proper orthogonal decomposition (POD) called spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space-time POD problem for statistically stationary flows and leads to modes that each ...
Colonius, Tim +2 more
core +3 more sources