Results 31 to 40 of about 823 (178)

Time and Frequency Synchronization for OTFS

, 2022
In this paper, we propose timing offset (TO) and carrier frequency offset (CFO) estimators for orthogonal time frequency space modulation (OTFS). The proposed estimators do not require any additional training overheads as they deploy the same pilot ...
Mohsen Bayat (12437199), Arman Farhang (12447064)   +1 more
core   +1 more source

Time Domain Channel Estimation and Equalization of CP-OTFS Under Multiple Fractional Dopplers and Residual Synchronization Errors

IEEE Access, 2021
In the last few years, orthogonal time frequency space (OTFS) modulation has received significant attention as an alternative to OFDM especially for high mobilty scenarios.
Suvra Sekhar Das, Vivek Rangamgari, Shashank Tiwari, Subhas Chandra Mondal   +3 more
doaj   +1 more source

Orthogonal time-frequency space modulation: a promising next-generation waveform

, 2021
The sixth-generation (6G) wireless networks are envisioned to provide a global coverage for the intelligent digital society of the near future, ranging from traditional terrestrial to non-terrestrial networks, where reliable communications in high ...
Wei, Zhiqiang, Yuan, Jinhong, Li, Shuangyang, Hadani, Ronny, Yuan, Weijie, Hanzo, Lajos, Bharatula, Ganesh   +6 more
core   +1 more source

Anion‐Controlled Structural Interconversion of Palladium Cages Enables Separations by Selective Guest Capture and Release

Angewandte Chemie, Volume 138, Issue 16, 13 April 2026.
We report a pair of interconvertible palladium(II) cages assembled from an asymmetric ligand, whose switching is triggered by specific counter‐anions, tetrafluoroborate (BF4−) and bis(trifluoromethanesulfonyl)imide (NTf2−). Their complementary guest preferences enable orthogonal, multi‐cycle catch‐and‐release, exemplified by the selective purification ...
Zhe Li, Tanya K. Ronson, Charlie T. McTernan   +2 more
wiley   +2 more sources

Low pilot overhead channel estimation for CP‐OFDM‐based massive MIMO OTFS system

IET Communications, 2022
In high‐speed mobile scenarios, due to the high‐speed relative motion between transmitter and receiver, the high Doppler frequency shift interferes with the inter‐subcarrier orthogonality in orthogonal frequency‐division multiplexing (OFDM) systems ...
Tong Li, Chuang Han, Rugui Yao, Ye Fan, Xiaoya Zuo   +4 more
doaj   +1 more source

Deep Learning-Based Signal Detection for Underwater Acoustic OTFS Communication

Journal of Marine Science and Engineering, 2022
Orthogonal time frequency space (OTFS) is a novel two-dimensional (2D) modulation technique that provides reliable communications over time- and frequency-selective channels.
Yuzhi Zhang, Shumin Zhang, Bin Wang, Yang Liu, Weigang Bai, Xiaohong Shen   +5 more
doaj   +1 more source

Autoencoder-Based Enhanced Orthogonal Time Frequency Space Modulation

, 2023
<p>Orthogonal time frequency space (OTFS) is a novel waveform that provides a superior performance in doublydispersive channels. Since it spreads information symbols across the entire delay-Doppler plane, OTFS can achieve full diversity.
Tek, Yusuf İslam, Doğukan, Ali Tuğberk, Başar, Ertuğrul   +2 more
core   +1 more source

OTFS modulation exploration for robust 6G communications in high mobility scenarios [PDF]

EPJ Web of Conferences
Orthogonal Time-frequency-space (OTFS) modulation represents a pioneering advancement, tailored to the requirements of prospective sixth-generation (6G) wireless networks.
Mohammadi Abderrahim, Dkiouak Aziz, Baghouri Mostafa, Chakkor Saad, El Oualkadi Ahmed, El Mamouni Anass   +5 more
doaj   +1 more source

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, Xiaogang TANG, Yiqing ZHOU, Chong ZHANG, Zhengang PAN   +4 more
doaj   +2 more sources

A low-complexity orthogonal time frequency space modulation method for underwater acoustic communication

, 2021
Compared with the orthogonal frequency division multiplexing (OFDM) modulation, the orthogonal time frequency space(OTFS) modulation has a lower peak-to-average power ratio. It can effectively resist the time selective fading caused by the Doppler effect
HE Chengbing, WANG Yingjie, ZHANG Qunfei, SHI Wentao, ZHANG Yang   +4 more
core   +2 more sources