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Integrated sensing and communications (ISAC) has been identified as one of the six usage scenarios for IMT-2030. Compared with communication performance, sensing performance is much more vulnerable to interference, and the received…

信号处理 · 电气工程与系统科学 2025-03-28 Bichai Wang , Xiuhong Wei , Xueru Li , Yongxing Zhou

This paper introduces a secure affine frequency division multiplexing (SE-AFDM) for wireless communication systems to enhance communication security. Besides configuring the parameter c1 to obtain communication reliability under doubly…

信号处理 · 电气工程与系统科学 2025-09-24 Ping Wang , Zulin Wang , Yuanfang Ma , Xiaosi Tian , Yuanhan Ni

The next generation of wireless communication technology is anticipated to address the communication reliability challenges encountered in high-speed mobile communication scenarios. An Orthogonal Time Frequency Space (OTFS) system has been…

信息论 · 计算机科学 2024-06-14 Lifan Wu , Shan Luo , Dongxiao Song , Fan Yang , Rongping Lin

This paper aims to answer a fundamental question in the area of Integrated Sensing and Communications (ISAC): What is the optimal communication-centric ISAC waveform for ranging? Towards that end, we first established a generic framework to…

信息论 · 计算机科学 2025-07-22 Fan Liu , Ying Zhang , Yifeng Xiong , Shuangyang Li , Weijie Yuan , Feifei Gao , Shi Jin , Giuseppe Caire

Affine frequency division multiplexing (AFDM) has emerged as a promising waveform for high-mobility communications. However, its equalization remains a practical challenge under general physical channels with off-grid delay and Doppler…

信号处理 · 电气工程与系统科学 2026-04-10 Cheng Shen , Chenyang Zhang , Jinhong Yuan

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

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…

信息论 · 计算机科学 2022-03-08 Ali Bemani , Nassar Ksairi , Marios Kountouris

Orthogonal frequency division multiplexing (OFDM) signals with rectangularly windowed pulses exhibit low spectral confinement. Two approaches usually referred to as pulse-shaping and active interference cancellation (AIC) are classically…

信号处理 · 电气工程与系统科学 2018-07-26 Luis Díez , José A. Cortés , Francisco J. Cañete , Eduardo Martos , Salvador Iranzo

We describe a novel index modulation (IM) scheme exploiting a unique feature of the recently proposed affine frequency division multiplexing (AFDM) in doubly-dispersive (DD) channels. Dubbed AFDM chirp-permutation-index modulation (CPIM),…

信号处理 · 电气工程与系统科学 2024-05-06 Hyeon Seok Rou , Kein Yukiyoshi , Taku Mikuriya , Giuseppe Thadeu Freitas de Abreu , Naoki Ishikawa

In this paper, we propose a joint delay-Doppler estimation framework for Rydberg atomic quantum receivers (RAQRs) leveraging affine frequency division multiplexing (AFDM), as a future enabler of hyper integrated sensing and communication…

信号处理 · 电气工程与系统科学 2026-03-17 Hanvit Kim , Hyeon Seok Rou , Kihong Min , Giuseppe Thadeu Freitas de Abreu , Sunwoo Kim

The ability of a radar to discriminate in both range and Doppler velocity is completely characterized by the ambiguity function (AF) of its transmit waveform. Mathematically, it is obtained by correlating the waveform with its…

信号处理 · 电气工程与系统科学 2024-06-11 Samuel Pinilla , Kumar Vijay Mishra , Brian M. Sadler , Henry Arguello

This paper investigates the issues of the hybrid beamforming design for the orthogonal frequency division multiplexing dual-function radar-communication (DFRC) system in multiple task scenarios involving the radar scanning and detection…

信号处理 · 电气工程与系统科学 2025-04-29 Lingyun Xu , Bowen Wang , Ziyang Cheng

As a metric for amplitude fluctuation of orthogonal frequency division multiplexing (OFDM) signal, cubic metric (CM) has received an increasing attention because it is more closely related to the distortion induced by nonlinear devices than…

信息论 · 计算机科学 2016-01-20 Kee-Hoon Kim , Jong-Seon No , Dong-Joon Shin

We propose a low-complexity receiver structure for the recently introduced Affine Filter Bank Modulation (AFBM) scheme, which is a novel waveform designed for integrated sensing and communications (ISAC) systems operating in…

信号处理 · 电气工程与系统科学 2025-06-23 Kuranage Roche Rayan Ranasinghe , Bruno S. Chang , Giuseppe Thadeu Freitas de Abreu

Integrated sensing and communications is regarded as a key enabling technology in the sixth generation networks, where a unified waveform, such as orthogonal frequency division multiplexing (OFDM) signal, is adopted to facilitate both…

信号处理 · 电气工程与系统科学 2023-12-27 Zhen Du , Fan Liu , Yifeng Xiong , Tony Xiao Han , Yonina C. Eldar , Shi Jin

Motivated by the ideal peak-to-average-power ratio and radar sensing capability of traditional frequency-coded radar waveforms, this paper considers the frequency shift keying (FSK) based waveform for joint communications and radar (JCR).…

信息论 · 计算机科学 2025-07-14 Tian Han , Peter J Smith , Urbashi Mitra , Jamie S Evans , Rajitha Senanayake

In this white paper, we summarize for the benefit of the wider research community on wireless communications, the two key results that we shared with the attendees of the 2026 IEEE Communication Theory Workshop in Azores, Portugal, about…

信号处理 · 电气工程与系统科学 2026-05-27 Hyeon Seok Rou , Giuseppe Thadeu Freitas de Abreu

Integrated sensing and communication (ISAC) is widely regarded as a key enabling technology for 6G wireless networks. While extensive research has explored the coexistence of sensing and communication functionalities, the use of orthogonal…

网络与互联网体系结构 · 计算机科学 2026-03-16 Huacheng Zeng , Kunzhe Song , Geo Jie Zhou , Ruxin Lin

The recent proposed affine frequency division multiplexing (AFDM) employing a multi-chirp waveform has shown its reliability and robustness in doubly selective fading channels. In the existing embedded pilot-aided channel estimation…

信号处理 · 电气工程与系统科学 2024-04-17 Kai Zheng , Miaowen Wen , Tianqi Mao , Lixia Xiao , Zhaocheng Wang

The inherent randomness of communication symbols creates a fundamental tension in Integrated Sensing and Communications (ISAC). On the one hand, they enable data transmission while allowing sensing to fully reuse communication resources. On…

信息论 · 计算机科学 2026-05-15 Fan Liu , Yifeng Xiong , Ya-Feng Liu , Jie Yang , Christos Masouros , Shi Jin