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A continuous-aperture array (CAPA)-based integrated sensing and communications (ISAC) framework is proposed for both downlink and uplink scenarios. Within this framework, continuous operator-based signal models are employed to describe the…

Information Theory · Computer Science 2026-01-22 Boqun Zhao , Chongjun Ouyang , Xingqi Zhang , Hyundong Shin , Yuanwei Liu

A novel continuous-aperture-array (CAPA)-aided integrated sensing and communication (ISAC) framework is proposed. Specifically, an optimal continuous ISAC waveform is designed to form a directive beampattern for multi-target sensing while…

Signal Processing · Electrical Eng. & Systems 2025-11-26 Junjie Ye , Zhaolin Wang , Yuanwei Liu , Peichang Zhang , Lei Huang , Arumugam Nallanathan

This letter proposes advanced beamforming design and analyzes its influence on the sensing and communications (S&C) performance for a multiple-antenna integrated S&C (ISAC) system with a single communication user and a single target. Novel…

Information Theory · Computer Science 2023-07-28 Chongjun Ouyang , Yuanwei Liu , Xingqi Zhang

In this paper, an integrated sensing and communication (ISAC) system is investigated. Initially, we introduce a design criterion wherein sensing data acquired from the preceding time slot is employed for instantaneous optimal beamforming in…

Computational Geometry · Computer Science 2024-10-08 Shengcai Zhou , Luping Xiang , Kun Yang

Integrated sensing and communication (ISAC), which enables hardware, resources (e.g., spectra), and waveforms sharing, is becoming a key feature in future-generation communication systems. This paper investigates performance…

Signal Processing · Electrical Eng. & Systems 2024-06-05 Shixiong Wang , Wei Dai , Haowei Wang , Geoffrey Ye Li

Integrated sensing and communication (ISAC) is a cornerstone technology for 6G networks, offering unified support for high-rate communication and high-accuracy sensing. While existing literature extensively covers link-level designs, the…

Information Theory · Computer Science 2026-01-16 Edward Andrews , Lawrence Ong , Duy T. Ngo , Yao Liu , Min Li

A general fading model for multipath channels between two non-parallel continuous-aperture arrays (CAPAs) is proposed. Building on this model, the performance of diversity and multiplexing achieved by CAPAs over fading channels is analyzed.…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Chongjun Ouyang , Zhaolin Wang , Xingqi Zhang , Yuanwei Liu

As the technical trends for the next-generation wireless network significantly extend the near-field region, a performance reevaluation of integrated sensing and communications (ISAC) with an appropriate channel model to account for the…

Information Theory · Computer Science 2024-04-16 Boqun Zhao , Chongjun Ouyang , Yuanwei Liu , Xingqi Zhang , H. Vincent Poor

A holographic multiple-input multiple-output (MIMO)-based integrated sensing and communications (ISAC) framework is proposed for both downlink and uplink scenarios. The spatial correlation is incorporated into the communication channel…

Information Theory · Computer Science 2025-01-16 Boqun Zhao , Chongjun Ouyang , Xingqi Zhang , Yuanwei Liu

Integrated sensing and communication (ISAC) is an enabling technology for the sixth-generation mobile communications, which equips the wireless communication networks with sensing capabilities. In this paper, we investigate transmit…

Signal Processing · Electrical Eng. & Systems 2024-06-19 Chunwei Meng , Zhiqing Wei , Dingyou Ma , Wanli Ni , Liyan Su , Zhiyong Feng

In this paper, we investigate the design of energy-efficient beamforming for an ISAC system, where the transmitted waveform is optimized for joint multi-user communication and target estimation simultaneously. We aim to maximize the system…

Signal Processing · Electrical Eng. & Systems 2023-07-11 Jiaqi Zou , Songlin Sun , Christos Masouros , Yuanhao Cui , Yafeng Liu , Derrick Wing Kwan Ng

Towards the upcoming 6G wireless networks, integrated sensing and communication (ISAC) has been identified as one of the typical usage scenarios. To further enhance the performance of ISAC, increasing the number of antennas as well as array…

Information Theory · Computer Science 2024-07-25 Hongqi Min , Chao Feng , Ruoguang Li , Yong Zeng

In this paper, we propose an integrated sensing and communication (ISAC) system aided by the movable-antenna (MA) array, which can improve the communication and sensing performance via flexible antenna movement over conventional…

Information Theory · Computer Science 2025-01-15 Wenyan Ma , Lipeng Zhu , Rui Zhang

In this paper, a novel continuous-aperture array (CAPA)-based wireless communication architecture is proposed, which relies on an electrically large aperture with a continuous current distribution. First, an existing prototype of CAPA is…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Yuanwei Liu , Chongjun Ouyang , Zhaolin Wang , Jiaqi Xu , Xidong Mu , Zhiguo Ding

Integrated sensing and communication (ISAC) is a promising technique to provide sensing services in future wireless networks. Numerous existing works have adopted a monostatic radar architecture to realize ISAC, i.e., employing the same…

Information Theory · Computer Science 2023-05-17 Dongfang Xu , Chang Liu , Shenghui Song , Derrick Wing Kwan Ng

In connected vehicular networks, it is vital to have vehicular nodes that are capable of sensing about surrounding environments and exchanging messages with each other for automating and coordinating purpose. Towards this end, integrated…

Information Theory · Computer Science 2022-05-05 Yao Liu , Min Li , An Liu , Jianmin Lu , Tony Xiao Han

In this paper, we shed light on the performance gain of integrated sensing and communications (ISAC) from the perspective of channel correlations between radar sensing and communication (S&C), namely ISAC subspace correlation. To begin…

Signal Processing · Electrical Eng. & Systems 2022-11-03 Shihang Lu , Xiao Meng , Zhen Du , Yifeng Xiong , Fan Liu

Integrated sensing and communication (ISAC) unifies radar sensing and communication, and improves the efficiency of the spectrum, energy and hardware. In this paper, we investigate the ISAC beamforming design in a downlink system with a…

Signal Processing · Electrical Eng. & Systems 2022-11-09 Jin Li , Nan Liu

Integrated sensing and communication (ISAC) emerges as an essential technique for overcoming spectrum congestion. However, the performance of traditional ISAC systems with fixed-position-antennas (FPA) is limited due to insufficient spatial…

Signal Processing · Electrical Eng. & Systems 2024-07-30 Tian Hao , Changxin Shi , Qingqing Wu , Bin Xia , Yinghong Guo , Lianghui Ding , Feng Yang

Integrated sensing and communication (ISAC) is a promising technology to fully utilize the precious spectrum and hardware in wireless systems, which has attracted significant attentions recently. This paper studies ISAC for the important…

Signal Processing · Electrical Eng. & Systems 2021-08-17 Zhiqiang Xiao , Yong Zeng
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