Results 271 to 280 of about 491,261 (311)

Variational autoencoder based receiver for orthogonal time frequency space modulation

Digital Signal Processing, 2021
Abstract The emerging orthogonal time frequency space (OTFS) modulation is demonstrated to offer reliable communication performance advantages over orthogonal frequency division multiplexing (OFDM) in doubly-dispersive fading channel. However, the existing embedded pilot-aided method to estimate channel impulse response (CIR) requires enormous ...
Qiao Li 0004, Zheng Xiang, Peng Ren, Wanlu Li   +3 more
openaire   +1 more source

A Survey on Reconfigurable Intelligent Surface-Assisted Orthogonal Time Frequency Space Systems

IEEE Open Journal of Vehicular Technology
The vision for 6th-generation (6G) wireless communication systems emphasizes the need for robust and reliable communication in extremely high-mobility scenarios, while also addressing critical demands for energy and spectral efficiency.
Qin Tao, Zhongjie Li, Kangda Zhi, Shuangyang Li, Weijie Yuan, Lorenzo Zaniboni, Slawomir Stanczak, E. Viterbo, Xianbin Wang   +8 more
semanticscholar   +1 more source

Spatial-Index Modulation Based Orthogonal Time Frequency Space System in Vehicular Networks

IEEE transactions on intelligent transportation systems (Print), 2023
In this paper, a spatial-index modulation (SIM) based orthogonal time frequency space (OTFS) system, named SIM-OTFS, is proposed to enhance the effectiveness and the reliability of high mobility vehicular networks in intelligent transportation systems ...
Yingchao Yang, Zhiquan Bai, K. Pang, Shuaishuai Guo, Haijun Zhang, K. Kwak   +5 more
semanticscholar   +1 more source

Model-Driven Channel Estimation Network for Orthogonal Time-Frequency Space Systems

IEEE Transactions on Vehicular Technology
Orthogonal time-frequency space (OTFS) modulation has garnered significant attention in wireless communications, particularly in high-mobility scenarios, due to its exceptional resilience to Doppler shifts.
Qian Wang, Xingke Chen, Qin Tao, Liping Qian, Pooi-Yuen Kam, Yuan Wu   +5 more
semanticscholar   +1 more source

Channel Estimation and Detection for Intelligent Reflecting Surface-Assisted Orthogonal Time Frequency Space Systems

IEEE Transactions on Wireless Communications
Orthogonal time frequency space (OTFS) modulation is a promising technique for the next-generation communications in high-mobility scenarios. However, in the delay-Doppler (DD) domain, the received signals suffer from a decrease in power due to the non ...
Qin Tao, Taoyu Xie, Xiaoling Hu, Shuowen Zhang, Dandan Ding   +4 more
semanticscholar   +1 more source

Orthogonal Time-Frequency Space (OTFS) Aided Media-Based Modulation System For 6G and Beyond Wireless Communications Networks

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
This paper proposes a new orthogonal time frequency space (OTFS)-based index modulation system called OTFS-aided media-based modulation (MBM) scheme (OTFS-MBM), which is a promising technique for high-mobility wireless communication systems.
Burak Ahmet Ozden, Murat Kaymaz, Erdogan Aydin, Emir Aslandogan, H. Ilhan, E. Başar, Miaowen Wen, Marco Di Renzo   +7 more
semanticscholar   +1 more source

Error Performance of Orthogonal Time Frequency Space (OTFS) Modulation

2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019
Orthogonal time frequency space (OTFS) transmits information symbols in the delay-Doppler domain rather than in the time-frequency domain (as with OFDM). In its original version, OTFS uses transmit and receive shaping waveforms which are biorthogonal with respect to translations by integer multiples of basic time and frequency intervals.
Ezio Biglieri, Patchava Raviteja, Yi Hong 0001   +2 more
openaire   +1 more source

Orthogonal Time-Frequency–Space Multiple Access Using Index Modulation and NOMA

IEEE Wireless Communications Letters
This letter introduces Non-Orthogonal Time Frequency Space Index Modulation Multiple Access (NOTFS-IMMA), an enhanced uplink random access scheme that integrates Non-Orthogonal Multiple Access (NOMA) with Orthogonal Time Frequency Space (OTFS) and Index ...
Adnan Tariq, Muhammad Sajid Sarwar, S. Shin   +2 more
semanticscholar   +1 more source

Joint Delay-Doppler Index Modulation for Orthogonal Time Frequency Space Modulation

IEEE Transactions on Communications
Orthogonal time frequency space (OTFS) is a promising waveform with outstanding performance in doubly-selective channels. Spreading information symbols across the entire delay-Doppler plane enables OTFS to exploit full diversity. Nevertheless, there is a
Yusuf İslam Tek, E. Başar
semanticscholar   +1 more source

Synchronization Technique for Orthogonal Time Frequency Space (OTFS)

2024 10th International Conference on Wireless and Telematics (ICWT)
Synchronization in Orthogonal Time Frequency Space (OTFS) communication systems faces particular challenges, especially in high mobility wireless environments. Carrier Frequency Offset (CFO) is one of the primary issues that can disrupt OTFS performance.
Bella Wahmilyana Asril, E.Y. Hamid
openaire   +2 more sources