A New Micro-Subcarrier OFDM-Based Waveform for Delay Doppler Domain Communication
IEEE AccessThis 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 ...
Swaroop Gopalam +5 more
doaj +4 more sources
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
OTFS—A Mathematical Foundation for Communication and Radar Sensing in the Delay-Doppler Domain
IEEE BITS the Information Theory Magazine, 2022 Orthogonal time frequency space (OTFS) is a framework for communication and active sensing that processes signals in the delay-Doppler (DD) domain. This paper explores three key features of the OTFS framework, and explains their value to applications.
Saif Khan Mohammed +2 more
exaly +3 more sources
Time-Domain to Delay-Doppler Domain Conversion of OTFS Signals in Very High Mobility Scenarios [PDF]
IEEE Transactions on Vehicular Technology, 2021 In Orthogonal Time Frequency Space (OTFS) modulation, information symbols are embedded in the delay-Doppler (DD) domain instead of the time-frequency (TF) domain. n order to ensure compatibility with existing OFDM systems (e.g. 4G LTE), most prior work on OTFS receivers consider a two-step conversion, where the received time-domain (TD) signal is ...
Saif Khan Mohammed
exaly +3 more sources
OTFS—Predictability in the Delay-Doppler Domain and Its Value to Communication and Radar Sensing
IEEE BITS the Information Theory Magazine, 2023 This article has been accepted for publication in IEEE BITS the Information Theory ...
Saif Khan Mohammed +2 more
exaly +3 more sources
Low PAPR Pilot for Delay-Doppler Domain Modulation
2022 IEEE/CIC International Conference on Communications in China (ICCC Workshops), 2022 This paper studies the low PAPR pilot design in delay-Doppler domain modulation. We adopt a sequence based pilot design instead of the conventional pulse pilot, to mitigate the PAPR issue. We develop simple channel estimation algorithm composes of two-stages which are path identification and channel coefficient estimation.
exaly +3 more sources
Survey of channel estimation method in delay-Doppler domain for OTFS
Tongxin xuebao, 2022 In order to provide reliable communication service for high-mobility scenarios, 6G can consider DD (delay-Doppler) domain based OTFS (orthogonal time frequency space) as its modulation scheme.By mapping the transmitted symbols onto DD domain and ...
Wang XING +4 more
doaj +3 more sources
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
openaire +2 more sources
Scatterer Identification by Atomic Norm Minimization in Vehicular mm-Wave Propagation Channels
IEEE Access, 2022 Sparse scatterer identification with atomic norm minimization (ANM) techniques in the delay-Doppler domain is investigated for a vehicle-to-infrastructure millimeter wave propagation channel.
Herbert Groll +5 more
doaj +1 more source
Physical Effect of In-Phase and Quadrature Imbalance in Delay-Doppler Domain
2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), 2021 Orthogonal time frequency space (OTFS) technique is a recent two-dimensional (2-D) modulation aiming to exploit both time and frequency selectivity of doubly dispersive wireless channel, which significantly affects the reliability of conventional wireless communication systems.
Armed Tusha +5 more
openaire +2 more sources