Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system
物联网学报, 2023 A low complexity downlink channel estimation method for high-speed mobile scenarios was proposed for the extra-large scale multiple-input multiple-output (MIMO) orthogonal time-frequency space (OTFS) system.Different from the existing studies, the ...
Xumin PU, Kaiyuan DENG, Qianbin CHEN
doaj
IEEE Open Journal of the Communications SocietyIn recent years, alternative methods to orthogonal frequency division multiplexing (OFDM) have emerged to enhance link-level performance of wireless networks in high-mobility environments.
Carmen D'Andrea +3 more
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Low-Complexity Oversampled OTFS Receivers With Reduced Overhead
IEEE Open Journal of the Communications SocietyOrthogonal Time Frequency Space (OTFS) modulation enables reliable communication in fast time-varying, frequency-selective channels. It is a delay-Doppler (DD) domain modulation that models the information symbols and the channel in the DD domain.
Narendra Deconda +3 more
doaj +1 more source
Unified Framework and Comparative Analysis of Delay-Doppler Communication Systems
IEEE Open Journal of the Communications SocietyDelay-Doppler (DD) system translates a time-varying channel into quasi-static time invariant channel by modulating the information in DD domain. This serves as a core principle behind orthogonal time frequency space (OTFS) and orthogonal delay Doppler ...
Sangeeta Nalluru +3 more
doaj +1 more source
Model-driven learning for OTFS detection based on an enhanced GNN with prior information
ICT ExpressOrthogonal Time Frequency Space (OTFS), characterized by its unique time-frequency orthogonality, has demonstrated significant advantages in overcoming the difficulties caused by time-varying channels in wireless communications.
Da Liu +3 more
doaj +1 more source
Graph-based Untrained Neural Network Detector for OTFS Systems
Inter-carrier interference (ICI) caused by mobile reflectors significantly degrades the conventional orthogonal frequency division multiplexing (OFDM) performance in high-mobility environments. The orthogonal time frequency space (OTFS) modulation system
Chang, Hao +2 more
core
Interleave Frequency Division Multiplexing
In this letter, we study interleave frequency division multiplexing (IFDM) for multicarrier modulation in static multipath and mobile time-varying channels, which outperforms orthogonal frequency division multiplexing (OFDM), orthogonal time frequency ...
Chen, Xuehui +5 more
core
Integrated Sensing and Communication via Orthogonal Time Frequency Space Signaling with Hybrid Message Passing Detection and Fractional Parameter Estimation. [PDF]
Sensors (Basel), 2023 Zhang J, Cai L, Liu H.
europepmc +1 more source
A Novel Joint Channel Estimation and Symbol Detection Receiver for Orthogonal Time Frequency Space in Vehicular Networks. [PDF]
Entropy (Basel), 2023 Zhang X +5 more
europepmc +1 more source
Frame synchronization algorithm based on delay-Doppler domain signal sparsity for OTFS system
Dianxin kexueA frame synchronization algorithm based on delay-Doppler domain was proposed for orthogonal time frequency and space (OTFS) modulation systems with a single pilot structure.
CHEN Yang +4 more
doaj +2 more sources