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Affine frequency division multiplexing (AFDM), tailored as a superior multicarrier technique utilizing chirp signals for high-mobility communications, is envisioned as a promising candidate for the sixth-generation (6G) wireless network.…

Information Theory · Computer Science 2025-04-24 Guangyao Liu , Tianqi Mao , Zhenyu Xiao , Miaowen Wen , Ruiqi Liu , Jingjing Zhao , Ertugrul Basar , Zhaocheng Wang , Sheng Chen

Integrated sensing and communication (ISAC) has been widely recognized as one of the key technologies for 6G wireless networks. In this paper, we focus on the waveform design of ISAC system, which can realize radar sensing while also…

Signal Processing · Electrical Eng. & Systems 2025-04-09 Jiangtao Wang , Xuyang Zhao , Muyu Mei , Yongchao Wang

The integration of sensing and communication (ISAC) functionalities have recently gained significant research interest as a hardware-, power-, spectrum- and cost- efficient solution. This experimental work focuses on a dual-functional radar…

Signal Processing · Electrical Eng. & Systems 2022-02-10 Tongyang Xu , Fan Liu , Christos Masouros , Izzat Darwazeh

We propose a distributed implementation for integrated sensing and communication (ISAC) backed by a massive multiple input multiple output (CF-mMIMO) architecture without cells. Distributed multi-antenna access points (APs) simultaneously…

Information Theory · Computer Science 2025-02-13 Mohamed Elfiatoure , Mohammadali Mohammadi , Hien Quoc Ngo , Hyundong Shin , Michail Matthaiou

Joint communications and sensing is a promising 6G technology, and the challenge is how to integrate them efficiently. Existing frequency-division and time-division coexistence can hardly bring a gain of integration. Directly using…

Information Theory · Computer Science 2022-01-05 Yihua Ma , Zhifeng Yuan , Guanghui Yu , Shuqiang Xia , Liujun Hu

Integrated sensing and communication (ISAC) has emerged as a pivotal technology for next-generation wireless communication and radar systems, enabling high-resolution sensing and high-throughput communication with shared spectrum and…

Signal Processing · Electrical Eng. & Systems 2026-02-16 Henglin Pu , Xuefeng Wang , Ajay Kumar , Lu Su , Husheng Li

As a promising key technology of 6th generation (6G) mobile communication system, integrated sensing and communication (ISAC) technology aims to make full use of spectrum resources to enable the functional integration of communication and…

Signal Processing · Electrical Eng. & Systems 2024-04-22 Haotian Liu , Zhiqing Wei , Fengyun Li , Yuewei Lin , Hanyang Qu , Huici Wu , Zhiyong Feng

Integrated Sensing and Communications (ISAC) enables efficient spectrum utilization and reduces hardware costs for beyond 5G (B5G) and 6G networks, facilitating intelligent applications that require both high-performance communication and…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Di Zhang , Yuanhao Cui , Xiaowen Cao , Nanchi Su , Yi Gong , Fan Liu , Weijie Yuan , Xiaojun Jing , J. Andrew Zhang , Jie Xu , Christos Masouros , Dusit Niyato , Marco Di Renzo

Orthogonal frequency division multiplexing (OFDM)-based integrated sensing and communication (ISAC) is promising for future sixth-generation mobile communication systems. Existing works focus on the joint estimation of the targets' range…

Signal Processing · Electrical Eng. & Systems 2023-12-21 Zelin Hu , Qibin Ye , Yixuan Huang , Su Hu , Gang Yang

In this letter, we study interleave frequency division multiplexing (IFDM) for multicarrier modulation in static multipath and mobile time-varying channels, which outperforms orthogonal frequency division multiplexing (OFDM), orthogonal…

Information Theory · Computer Science 2024-05-07 Yuhao Chi , Lei Liu , Yao Ge , Xuehui Chen , Ying Li , Zhaoyang Zhang

The sixth generation (6G) systems will likely employ orthogonal frequency division multiplexing (OFDM) waveform for performing the joint task of sensing and communication. In this paper, we design an OFDM system for integrated sensing and…

Information Theory · Computer Science 2025-09-30 Vijaya Yajnanarayana , Philipp Geuer

Achieving effective uplink bistatic ISAC over an OFDM waveform gives rise to challenging interference structures. These are mostly due to unequal direct- and echo-path contributions and Doppler-induced ICI, rendering orthogonal resource…

Signal Processing · Electrical Eng. & Systems 2026-05-22 Bruno F. Costa , Anup Mishra , Israel Leyva-Mayorga , Taufik Abrão , Petar Popovski

Integrated sensing and communication (ISAC) in the near-field regime offers the potential to jointly support high-rate downlink transmission and high-resolution multi-target detection by exploiting the spherical-wave nature of…

Signal Processing · Electrical Eng. & Systems 2025-06-10 Hang Ruan , Homa Nikbakht , Ruizhi Zhang , Honglei Chen , Yonina C. Eldar

We consider a bistatic vehicular integrated sensing and communications (ISAC) system that employs the recently proposed orthogonal chirp division multiplexing (OCDM) multicarrier waveform. As a stand-alone communications waveform, OCDM has…

Information Theory · Computer Science 2021-11-10 Sangeeta Bhattacharjee , Kumar Vijay Mishra , Ramesh Annavajjala , Chandra R. Murthy

In this paper, we investigate the issue of uplink integrated sensing and communication (ISAC) in 6G wireless networks where the sensing echo signal and the communication signal are received simultaneously at the base station (BS). To…

Information Theory · Computer Science 2024-03-05 Qiao Qi , Xiaoming Chen , Caijun Zhong , Chau Yuen , Zhaoyang Zhang

The advancement of wireless communication systems toward 5G and beyond is spurred by the demand for high data rates, exceedingly dependable low-latency communication, and extensive connectivity that aligns with sensing requisites such as…

Information Theory · Computer Science 2024-04-10 Mamady Delamou , El Mehdi Amhoud

Affine Frequency Division Multiplexing (AFDM), which is based on discrete affine Fourier transform (DAFT), has recently been proposed for reliable communication in high-mobility scenarios. Two low complexity detectors for AFDM are…

Information Theory · Computer Science 2022-03-08 Ali Bemani , Nassar Ksairi , Marios Kountouris

The advancement to 6G calls for waveforms that transcend static robustness to achieve intelligent adaptability. Affine Frequency Division Multiplexing (AFDM), despite its strength in doubly-dispersive channels, has been confined by chirp…

Information Theory · Computer Science 2025-12-17 Yewen Cao , Yulin Shao

The Integrated Sensing and Communications (ISAC) paradigm is anticipated to be a cornerstone of the upcoming 6G networks. In order to optimize the use of wireless resources, 6G ISAC systems need to harness the communication data payload…

Information Theory · Computer Science 2025-02-18 Fan Liu , Ya-Feng Liu , Yuanhao Cui , Christos Masouros , Jie Xu , Tony Xiao Han , Stefano Buzzi , Yonina C. Eldar , Shi Jin

Integrated sensing and communications (ISAC) is one of the key enabling technologies in future sixth-generation (6G) networks. Current ISAC systems predominantly rely on deterministic pilot signals within the signal frame to accomplish…

Signal Processing · Electrical Eng. & Systems 2025-06-23 Chen Xu , Xianghao Yu , Fan Liu , Shi Jin