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The sixth generation (6G) of wireless networks introduces integrated sensing and communication (ISAC), a technology in which communication and sensing functionalities are inextricably linked, sharing resources across time, frequency, space,…

信号处理 · 电气工程与系统科学 2024-06-28 Silvia Mura , Dario Tagliaferri , Marouan Mizmizi , Umberto Spagnolini , Athina Petropulu

Integrated Sensing and Communication (ISAC) requires the development of a waveform capable of efficiently supporting both communication and sensing functionalities. This paper proposes a novel waveform that combines the benefits of both the…

信号处理 · 电气工程与系统科学 2026-01-23 Pankaj Kumar , Mohammed El-Hajjar , Ibrahim A. Hemadeh , Yasser Mestrah , Suraj Srivastava , Aditya K. Jagannatham , Lajos Hanzo

Orthogonal Time Frequency Space (OTFS) modulation exploits the sparsity of Delay-Doppler domain channels, making it highly effective in high-mobility scenarios. Its accurate channel estimation supports integrated sensing and communication…

信号处理 · 电气工程与系统科学 2025-05-13 Guangyu Lei , Yanduo Qiao , Tianhao Liang , Weijie Yuan , Tingting Zhang

There is a dearth of publications on the subject of spreading-aided Orthogonal Time Frequency Space (OTFS) solutions, especially for Integrated Sensing and Communication (ISAC), even though Code Division Multiple Access (CDMA) assisted…

信号处理 · 电气工程与系统科学 2025-02-13 Hugo Hawkins , Chao Xu , Lie-Liang Yang , Lajos Hanzo

Recently, a new precoding technique called orthogonal time-frequency signaling (OTFS) has been proposed for time- and frequency-selective communication channels. OTFS precodes a data frame with a complete set of spreading sequences and…

信息论 · 计算机科学 2017-10-30 Thomas Zemen , Markus Hofer , David Loeschenbrand

Integrated sensing and communication (ISAC) is envisioned to be one of the key usage scenarios for the sixth generation (6G) mobile communication networks. While significant progresses have been achieved for the theoretical studies, the…

信号处理 · 电气工程与系统科学 2026-01-08 Zhiwen Zhou , Chaoyue Zhang , Xiaoli Xu , Yong Zeng

Recent studies shows that the orthogonal time frequency space (OTFS) waveform is a promising candidate for future communication. To meet users' potential demand for Integrated Sensing and Communication (ISAC) applications in 6G, the usage…

信息论 · 计算机科学 2025-10-01 Dazhuo Wang , Yonghong Zeng , Yuhong Wang , Francois Chin , Yugang Ma , Sumei Sun

Integrated sensing and communication (ISAC) is a key feature of next-generation wireless networks, enabling a wide range of emerging applications such as vehicle-to-everything (V2X) and unmanned aerial vehicles (UAVs), which operate in…

信号处理 · 电气工程与系统科学 2025-11-03 Haoran Yin , Yanqun Tang , Jun Xiong , Fan Liu , Yuanhan Ni , Qu Luo , Roberto Bomfin , Marwa Chafii , Marios Kountouris , Christos Masouros

High-mobility wireless communication systems suffer from severe Doppler spread and multi-path delay, which degrade the reliability and spectral efficiency of conventional modulation schemes. Orthogonal time frequency space (OTFS) modulation…

信息论 · 计算机科学 2026-05-20 Chaorong Zhang , Benjamin K. Ng , Hui Xu , Chan-Tong Lam , Halim Yanikomeroglu

Recently, orthogonal time-frequency-space (OTFS) modulation is used as a promising candidate waveform for high mobility communication scenarios. In practical transmission, OTFS with rectangular pulse shaping is implemented using different…

信号处理 · 电气工程与系统科学 2022-05-31 Salah Eddine Zegrar , Hüseyin Arslan

The orthogonal-time-frequency-space (OTFS) modulation has emerged as a promising modulation scheme for high mobility wireless communications. To harvest the time and frequency diversity promised by OTFS, some promising detectors, especially…

信息论 · 计算机科学 2021-02-17 Zhengdao Yuan , Fei Liu , Weijie Yuan , Qinghua Guo , Zhongyong Wang , Jinhong Yuan

Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme designed in the Doppler-delay domain to fully exploit time and frequency diversity of general time-varying channels. In this paper, we present a novel discrete-time…

In this paper, the waveform design for 6G integrated sensing and communication (ISAC) systems is investigated, with a particular focus on the practical limitations imposed by imperfect full-duplex radios. Under such imperfections,…

信号处理 · 电气工程与系统科学 2026-05-05 Ning Wei , Aimin Tang , Yin Xu , Wenze Qu

Integrated sensing and communication (ISAC) is viewed as a crucial component of future mobile networks and has gained much interest in both academia and industry. Similar to the emergence of radio-frequency (RF) ISAC, the integration of…

信号处理 · 电气工程与系统科学 2024-03-12 Yunfeng Wen , Fang Yang , Jian Song , Zhu Han

We consider a joint radar estimation and communication system using orthogonal time frequency space (OTFS) modulation. The scenario is motivated by vehicular applications where a vehicle equipped with a mono-static radar wishes to…

信息论 · 计算机科学 2019-10-07 Lorenzo Gaudio , Mari Kobayashi , Giuseppe Caire , Giulio Colavolpe

This paper investigates the design of orthogonal frequency-division multiplexing (OFDM) waveforms for bistatic integrated sensing and communication (ISAC) systems. In the considered framework, an ISAC transmitter jointly optimizes…

信息论 · 计算机科学 2026-03-10 Ruolin Du , Zhiqiang Wei , Zai Yang , Ya-Feng Liu , Bingpeng Zhou , Derrick Wing Kwan Ng

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…

信息论 · 计算机科学 2021-02-04 Zhiqiang Wei , Weijie Yuan , Shuangyang Li , Jinhong Yuan , Ganesh Bharatula , Ronny Hadani , Lajos Hanzo

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 exhibit poor performance in rich scattering environments…

信号处理 · 电气工程与系统科学 2022-09-22 Alva Kosasih , Xinwei Qu , Wibowo Hardjawana , Chentao Yue , Branka Vucetic

Integrated sensing and communication (ISAC) is regarded as the enabling technology in the future 5th-Generation-Advanced (5G-A) and 6th-Generation (6G) mobile communication system. ISAC waveform design is critical in ISAC system. However,…

信息论 · 计算机科学 2023-10-10 Zhiqing Wei , Jinghui Piao , Xin Yuan , Huici Wu , J. Andrew Zhang , Zhiyong Feng , Lin Wang , Ping Zhang

Orthogonal time frequency space (OTFS) modulation has emerged as a promising candidate to overcome the performance degradation of orthogonal frequency division multiplexing (OFDM), which are commonly encountered in high-mobility wireless…

信号处理 · 电气工程与系统科学 2026-02-02 Yushi Lei , Yusha Liu , Guanghui Liu , Lei Wan , Kun Yang