Results 261 to 270 of about 491,261 (311)

Orthogonal Time Frequency Space With Sub-Band Index Modulation

IEEE Communications Letters
This letter proposes an innovative orthogonal time-frequency space with sub-band index modulation (OTFS-SBIM) scheme. To overcome the complexity and spectral efficiency (SE) limitations inherent in the OTFS-IM, this study introduces a transmission ...
Si-Yu Zhang, Yue-Xia Zhang 0001, Behnam Shahrrava   +2 more
openaire   +2 more sources

PAPR Reduction Precoding for Orthogonal Time Frequency Space Modulation

2023 46th International Conference on Telecommunications and Signal Processing (TSP), 2023
Orthogonal time frequency space (OTFS) modulation is a promising technique for efficient data transmission in wireless communication systems, particularly in high-mobility scenarios. However, as in other multicarrier schemes, OTFS has one major drawback,
Yusuf Islam Tek, Ertugrul Basar
openaire   +2 more sources

OTFS-SCMA: A Code-Domain NOMA Approach for Orthogonal Time Frequency Space Modulation

IEEE Transactions on Communications, 2021
Orthogonal time frequency space (OTFS) modulation is a two-dimensional (2-D) modulation technique that has the potential to overcome the challenges faced by orthogonal frequency division multiplexing (OFDM) in high Doppler environments.
Kuntal Deka, Anna Thomas, Sanjeev Sharma   +2 more
exaly   +2 more sources

An Orthogonal Time Frequency Space Direct Sequence Modulation Scheme

2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021
This paper presents an Orthogonal Time Frequency Space Direct Sequence (OTFS-DS) modulation scheme to provide a more robust link. In this scheme, the information symbols are spread in either the delay or Doppler domain by spreading codes. The proposed scheme can gain extra diversity in the delay or Doppler domain as well as full diversity in the time ...
Jinjing Sun, Zulin Wang, Qin Huang 0002
openaire   +1 more source

Vehicular Channel Characterization in Orthogonal Time-Frequency Space

2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019
Orthogonal time-frequency space (OTFS) modulation has been suggested as modulation scheme for the fifth generation of wireless communications and beyond. The scheme is promoted as especially well apt to tackle future challenges of high mobility, millimeter wave communications (mmWave) and massive Multiple-Input Multiple-Output (MIMO).
Thomas Blazek, Herbert Groll, Stefan Pratschner, Erich Zöchmann   +3 more
openaire   +1 more source

Spatial Modulation based Orthogonal Time Frequency Space Modulation – Multiple Access

2025 6th International Conference on Intelligent Communication Technologies and Virtual Mobile Networks (ICICV)
6G communication system built with the purpose for IoT applications, Smart Vehicle, and Industrial automation. In all these fields, the number of devices engaged in communication is increasing daily to obtain more accurate information. It is required for
R. Jayashri, G. Ramkumar
semanticscholar   +1 more source

Residual Stack-Aided Hybrid CNN-LSTM-Based Automatic Modulation Classification for Orthogonal Time-Frequency Space System

IEEE Communications Letters, 2023
In this letter, for the first time, we propose an automatic modulation classification (AMC) method for orthogonal time-frequency space (OTFS) signal modulation using a hybrid convolutional neural network and long short-term memory (CNN-LSTM) network with
Anand Kumar, .. Manish, U. Satija
semanticscholar   +1 more source

Research on Orthogonal Time Frequency Space in a 125-GHz mmWave Indoor Wireless Communication System

Journal of Lightwave Technology
We provide a detailed comparison between orthogonal time frequency space (OTFS) and orthogonal frequency division multiplexing (OFDM) modulation schemes, focusing on peak-to-average power ratio (PAPR), spectral efficiency (SE), and resistance to ...
Mingxu Wang, Jianjun Yu, Xianmin Zhao, Wen Zhou, Jiali Chen, Xiongwei Yang, Chengzhen Bian, Yi Wei, Qiutong Zhang, Yang Han, Peng Tian, Sicong Xu, Qinyi Zhang, Luhan Jiang, U. Rahim, Kaihui Wang, Weiping Li   +16 more
semanticscholar   +1 more source

Orthogonal Time Frequency Space and Predictive Beamforming-Enabled URLLC in Vehicular Networks

IEEE wireless communications, 2023
To fulfill the requirements of future intelligent transportation system in 6G era, ultra-reliable and low-latency vehicular communications is of great importance.
W. Yuan, Jiaqi Zou, Yuanhao Cui, Xinyu Li, Junsheng Mu, Kaifeng Han   +5 more
semanticscholar   +1 more source

From Orthogonal Time–Frequency Space to Affine Frequency-Division Multiplexing: A comparative study of next-generation waveforms for integrated sensing and communications in doubly dispersive channels [Special Issue on Signal Processing for the Integrated Sensing and Communications Revolution]

IEEE Signal Processing Magazine
Next-generation wireless systems will offer integrated sensing and communications (ISAC) functionalities not only in order to enable new applications, but also as a means to mitigate challenges such as doubly-dispersive channels, which arise in high ...
H. Rou, G. T. F. de Abreu, Junil Choi, D. González G., Marios Kountouris, Y. L. Guan, Osvaldo Gonsa   +6 more
semanticscholar   +1 more source