Auto-Encoder Based Orthogonal Time Frequency Space Modulation and Detection With Meta-Learning
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3271993
Abstract: To tackle a Doppler sensitivity problem of orthogonal frequency division multiplexing (OFDM), orthogonal time frequency space (OTFS) has been investigated, where information is carried over delay-Doppler domain. In this paper, to improve communication reliability in… read more here.
Keywords: time frequency; detection; modulation detection; orthogonal time ... See more keywords
Reconfigurable Intelligent Surface-Aided Orthogonal Time Frequency Space and Its Deep Learning-Based Signal Detection
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3273297
Abstract: 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-mobility doubly-selective channel… read more here.
Keywords: time frequency; intelligent surface; frequency space; orthogonal time ... See more keywords
A Closed-Form Minimum BER Precoder for Orthogonal Time Frequency Space Systems
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3175474
Abstract: This letter devises a closed-form precoder for Orthogonal Time Frequency Space (OTFS) systems with linear equalization to minimize the bit error rate (BER). The precoder is developed by optimally allocating the power to adapt to… read more here.
Keywords: minimum ber; orthogonal time; precoder orthogonal; ber precoder ... See more keywords
Orthogonal Time Frequency Space Modulation—Part III: ISAC and Potential Applications
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3209651
Abstract: The first two parts of this tutorial on orthogonal time frequency space (OTFS) modulation have discussed the fundamentals of delay-Doppler (DD) domain communications as well as some advanced technologies for transceiver design. In this letter,… read more here.
Keywords: time frequency; time; frequency space; potential applications ... See more keywords
Orthogonal Time Frequency Space (OTFS) With Dual-Mode Index Modulation
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2021.3053981
Abstract: Orthogonal time frequency space (OTFS) modulation has been proved to have better bit error rate (BER) performance over orthogonal frequency division multiplexing (OFDM) under high-mobility conditions. In this letter, a new transmission scheme, called OTFS… read more here.
Keywords: modulation; time frequency; orthogonal time; index modulation ... See more keywords
Bayesian Neural Network Detector for an Orthogonal Time Frequency Space Modulation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2022.3209076
Abstract: The orthogonal time frequency space (OTFS) modulation is proposed for beyond 5G wireless systems to deal with high mobility communications. The existing low complexity OTFS detectors’ performance is suboptimal in rich scattering environments where there… read more here.
Keywords: time frequency; frequency space; orthogonal time; detector ... See more keywords
Orthogonal Time Frequency Space and Predictive Beamforming-Enabled URLLC in Vehicular Networks
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Wireless Communications"
DOI: 10.1109/mwc.005.2200408
Abstract: To fulfill the requirements of future intelligent transportation system in 6G era, ultra-reliable and low-latency vehicular communications is of great importance. In high-mobility scenarios, the conventional orthogonal frequency division multiplexing (OFDM) modulation may fail to… read more here.
Keywords: time frequency; frequency space; predictive beamforming; frequency ... See more keywords
Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Signal Processing"
DOI: 10.1109/tsp.2019.2919411
Abstract: Orthogonal time frequency space (OTFS) modulation outperforms orthogonal frequency division multiplexing (OFDM) in high-mobility scenarios. One challenge for OTFS massive MIMO is downlink channel estimation due to the large number of base station antennas. In… read more here.
Keywords: channel estimation; frequency; orthogonal time; sparsity ... See more keywords
A Simple Variational Bayes Detector for Orthogonal Time Frequency Space (OTFS) Modulation
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2020.2991443
Abstract: The emerging orthogonal time frequency space (OTFS) modulation technique has shown its superiority to the current orthogonal frequency division multiplexing (OFDM) scheme, in terms of its capabilities of exploiting full time-frequency diversity and coping with… read more here.
Keywords: space otfs; frequency; orthogonal time; time frequency ... See more keywords
Cramer-Rao Low Bound of Channel Estimation for Orthogonal Time Frequency Space Modulation System
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2021.3107917
Abstract: Orthogonal time-frequency space (OTFS) modulation is supposed to outperform the classical orthogonal frequency division multiplexing (OFDM) in the high-mobility communication scenarios. Channel estimation is an important issue for OTFS, and Cramer-Rao low bound (CRLB) provides… read more here.
Keywords: frequency; channel estimation; estimation; orthogonal time ... See more keywords
A Structured Sparse Bayesian Channel Estimation Approach for Orthogonal Time—Frequency Space Modulation
Sign Up to like & getrecommendations! Published in 2023 at "Entropy"
DOI: 10.3390/e25050761
Abstract: Orthogonal time–frequency space (OTFS) modulation has been advocated as a promising waveform for achieving integrated sensing and communication (ISAC) due to its superiority in high-mobility adaptability and spectral efficiency. In OTFS modulation-based ISAC systems, accurate… read more here.
Keywords: time frequency; frequency space; frequency; orthogonal time ... See more keywords