6G New Time-delay Doppler Communication Paradigm: Technical Advantages, Design Challenges, Applications and Prospects of OTFS

LIAO Yong; LUO Yu; JING Yahao

doi:10.11999/JEIT231133

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LIAO Yong, LUO Yu, JING Yahao. 6G New Time-delay Doppler Communication Paradigm: Technical Advantages, Design Challenges, Applications and Prospects of OTFS[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT231133

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LIAO Yong, LUO Yu, JING Yahao. 6G New Time-delay Doppler Communication Paradigm: Technical Advantages, Design Challenges, Applications and Prospects of OTFS[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT231133

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6G New Time-delay Doppler Communication Paradigm: Technical Advantages, Design Challenges, Applications and Prospects of OTFS

doi: 10.11999/JEIT231133

School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China

Funds: Chongqing Natural Science Foundation (CSTB2023NSCQ-MSX0025)

Received Date: 2023-10-17
Available Online: 2024-04-25

Abstract

Abstract

In the future communication network, the sixth generation mobile communication system technology(6G), which is widely expected, will face many challenges, including the issue of ultra-reliable communication in high-speed mobile scenarios. Orthogonal Time Frequency Space (OTFS) modulation technology overcomes the multi-path and Doppler effects of traditional communication systems in high-speed mobile environments, and provides a new possibility for realizing 6G ultra-reliable communication. This paper first introduces the basic principle, mathematical model, interference and advantage analysis of OTFS. Then, the research status of OTFS technology in synchronization, channel estimation and signal detection is summarized and analyzed. Then, the application trend of OTFS is analyzed from four typical application scenarios of vehicle networking, unmanned aerial vehicle, satellite communication and marine communication. Finally, the difficulties and challenges to be overcome in future OTFS research are discussed from four aspects: reducing multi-dimensional matching filter, phase demodulation and channel estimation, hardware implementation complexity and improving the high utilization of time-frequency resources.
- The sixth generation of mobile communications system,
- Orthogonal Time Frequency Space (OTFS),
- Delay-doppler domain,
- Synchronization,
- Channel estimation,
- Signal detection

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References(89)

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