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Integrated sensing and communication (ISAC) capability is envisioned as one key feature for future cellular networks. Classical half-duplex (HD) radar sensing is conducted in a "first-emit-then-listen" manner. One challenge to realize HD…

Information Theory · Computer Science 2023-09-08 Yuan Guo , Yang Liu , Qingqing Wu , Xiaoyang Li , Qingjiang Shi

This paper provides a fundamental characterization of the discrete ambiguity functions (AFs) of random communication waveforms under arbitrary orthonormal modulation with random constellation symbols, which serve as a key metric for…

Information Theory · Computer Science 2026-02-26 Ying Zhang , Fan Liu , Yifeng Xiong , Weijie Yuan , Shuangyang Li , Le Zheng , Tony Xiao Han , Christos Masouros , Shi Jin

We propose an adaptive transmission technique for free space optical (FSO) systems, operating in atmospheric turbulence and employing subcarrier phase shift keying (S-PSK) intensity modulation. Exploiting the constant envelope…

Networking and Internet Architecture · Computer Science 2016-11-17 Nestor D. Chatzidiamantis , Athanasios S. Lioumpas , George K. Karagiannidis , Shlomi Arnon

The focus of this paper is on co-existence between a communication system and a pulsed radar sharing the same bandwidth. Based on the fact that the interference generated by the radar onto the communication receiver is intermittent and…

Information Theory · Computer Science 2018-02-14 Le Zheng , Marco Lops , Xiaodong Wang , Emanuele Grossi

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…

Signal Processing · Electrical Eng. & Systems 2023-12-27 Zhen Du , Fan Liu , Yifeng Xiong , Tony Xiao Han , Yonina C. Eldar , Shi Jin

Joint radar-communications (JRC) is considered to be a vital technology in deploying the next generation systems, since its useful in decongestion of the radio frequency (RF) spectrum and utilising the same hardware resources for dual…

Information Theory · Computer Science 2022-11-16 Evangelos Vlachos , Aryan Kaushik

With increasing application of frequency-modulated continuous wave (FMCW) radars in autonomous vehicles, mutual interference among FMCW radars poses a serious threat. Through this paper, we present a novel approach to effectively and…

Signal Processing · Electrical Eng. & Systems 2023-01-02 Abhilash Gaur , Po-Hsuan Tseng , Kai-Ten Feng , Seshan Srirangarajan

This paper explores the potential of near-field beamforming (NFBF) in integrated sensing and communication (ISAC) systems with extremely large-scale arrays (XL-arrays). The large-scale antenna arrays increase the possibility of having…

Signal Processing · Electrical Eng. & Systems 2023-08-15 Kaiqian Qu , Shuaishuai Guo , Nasir Saeed

This paper investigates the achievable information rate of phase-shift keying (PSK) over frequency non-selective Rayleigh fading channels without channel state information (CSI). The fading process exhibits general temporal correlation…

Information Theory · Computer Science 2007-07-13 Wenyi Zhang , J. Nicholas Laneman

Integrated sensing and communication (ISAC) is viewed as a key technology in future wireless networks. One of the main challenges in realizing ISAC is developing dual-functional waveforms that can communicate with communication receivers…

Signal Processing · Electrical Eng. & Systems 2024-05-01 Kecheng Zhang , Weijie Yuan , Pingzhi Fan , Xianbin Wang

This paper presents an echo-side modulation framework for integrated sensing and communication (ISAC) systems. A space-time reconfigurable intelligent surface (ST-RIS) impresses a continuous-phase modulation onto the radar echo, enabling…

Signal Processing · Electrical Eng. & Systems 2026-01-15 Marouan Mizmizi , Stefano Tebaldini , Umberto Spagnolini

In dual-function radar-communication (DFRC) systems the probing signal contains information intended for the communication users, which makes that information vulnerable to eavesdropping by the targets. We study the security of a DFRC…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Yi-Kai Li , Athina Petropulu

Dual-functional radar-communication (DFRC) is a promising new solution to simultaneously probe the radar target and transmit information in wireless networks. In this paper, we study the joint optimization of transmit and receive…

Information Theory · Computer Science 2020-09-09 Li Chen , Fan Liu , Jun Liu , Christos Masouros

Millimeter-wave (mmWave) using conventional phased array (CPA) enables highly directional and fixed angular beamforming (FAB), therefore enhancing physical layer security (PLS) in the angular domain. However, as the eavesdropper is located…

Information Theory · Computer Science 2019-03-26 Yuanquan Hong , Xiaojun Jing , Hui Gao , Yuan He

This paper investigates flexible beamforming design in an integrated sensing and communication (ISAC) network with movable antennas (MAs). A bistatic radar system is integrated into a multi-user multiple-input-single-output (MU-MISO)…

Signal Processing · Electrical Eng. & Systems 2024-05-20 Wanting Lyu , Songjie Yang , Yue Xiu , Zhongpei Zhang , Chadi Assi , Chau Yuen

We consider a hybrid active-passive radar system that employs a wireless source as a passive illuminator of opportunity (IO) and a co-channel active radar transmitter operating in the same frequency band to seek spectral efficiency. The…

Signal Processing · Electrical Eng. & Systems 2020-02-19 Fangzhou Wang , Hongbin Li

Joint radar and communications (JRC) can realize two radio frequency (RF) functions using one set of resources, greatly saving hardware, energy and spectrum for wireless systems needing both functions. Frequency-hopping (FH) MIMO radar is a…

Signal Processing · Electrical Eng. & Systems 2023-01-30 Jiangtao Liu , Kai Wu , Tao Su , J. Andrew Zhang

Cognitive radio (CR) networks face significant challenges in spectrum sensing, especially under spectrum scarcity. Fluid antenna systems (FAS) can offer an unorthodox solution due to their ability to dynamically adjust antenna positions for…

Signal Processing · Electrical Eng. & Systems 2024-11-14 Junteng Yao , Ming Jin , Tuo Wu , Maged Elkashlan , Chau Yuen , Kai-Kit Wong , George K. Karagiannidis , Hyundong Shin

A photonics-assisted joint communication-radar system is proposed and experimentally demonstrated, by introducing a quadrature phase-shift keying (QPSK)-sliced linearly frequency-modulated (LFM) signal. An LFM signal is carrier-suppressed…

Signal Processing · Electrical Eng. & Systems 2022-06-08 Shi Wang , Dingding Liang , Yang Chen

In this paper, we study optimal waveform design to maximize mutual information (MI) for a joint communication and (radio) sensing (JCAS, a.k.a., radar-communication) multi-input multi-output (MIMO) downlink system. We consider a typical…

Signal Processing · Electrical Eng. & Systems 2020-02-04 Xin Yuan , Zhiyong Feng , J. Andrew Zhang , Wei Ni , Ren Ping Liu , Zhiqing Wei , Changqiao Xu
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