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This paper investigates the optimization of beamforming design in a system with integrated sensing and communication (ISAC), where the base station (BS) sends signals for simultaneous multiuser communication and radar sensing. We aim at…

Information Theory · Computer Science 2022-04-27 Zhenyao He , Wei Xu , Hong Shen , Yongming Huang , Huahua Xiao

In this paper, we focus on the design of the transmit waveforms of a frequency diverse array (FDA) in order to improve the output signal-to-interference-plus-noise ratio (SINR) in the presence of signal-dependent mainlobe interference.…

Signal Processing · Electrical Eng. & Systems 2022-12-21 Wenkai Jia , Andreas Jakobsson , Wen-Qin Wang

Near-field integrated sensing and communication (ISAC) leverages distance-dependent channel variations for joint distance and angle estimation. However, full-digital architectures have prohibitive hardware costs, making hybrid…

Information Theory · Computer Science 2025-12-05 Jiasi Zhou , Chintha Tellambura , Geoffrey Ye Li

A digitally-assisted photonic analog domain self-interference cancellation (SIC) and frequency downconversion method is proposed for in-band full-duplex multiple-input multiple-output (MIMO) systems using the least square (LS) algorithm…

Signal Processing · Electrical Eng. & Systems 2022-09-28 Moxuan Han , Yang Chen

This paper investigates a robust joint power allocation and beamforming scheme for in-band full-duplex multi-cell multi-user (IBFD-MCMU) networks. A mean-squared error (MSE) minimization problem is formulated with constraints on the power…

Information Theory · Computer Science 2024-03-19 Haifeng Luo , Navneet Garg , Mark Holm , Tharmalingam Ratnarajah

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

Conventional active array radars often jointly design the transmit and receive beamforming for effectively suppressing interferences. To further promote the interference suppression performance, this paper introduces a reconfigurable…

Signal Processing · Electrical Eng. & Systems 2024-01-30 Shengyao Chen , Qi Feng , Longyao Ran , Feng Xi , Zhong Liu

Mixed-Integer Quadratically Constrained Quadratic Programs arise in a variety of applications, particularly in energy, water, and gas systems, where discrete decisions interact with nonconvex quadratic constraints. These problems are…

Optimization and Control · Mathematics 2025-09-24 Ignacio Gómez-Casares , Pietro Belotti , Bissan Ghaddar , Julio González-Díaz

A well-known challenge in beamforming is how to optimally utilize the degrees of freedom (DoF) of the array to design a robust beamformer, especially when the array DoF is limited. In this paper, we leverage the tool of constrained convex…

Information Theory · Computer Science 2022-10-20 Wenqiang Pu , Jinjun Xiao , Tao Zhang , Zhi-Quan Luo

To exploit the potential of the RIS in supporting ISAC, this paper proposes a novel joint active and passive beamforming design for RIS-enabled ISAC system in consideration of the target size. First, the detection probability for target…

Information Theory · Computer Science 2024-10-28 Zhe Xing , Rui Wang , Xiaojun Yuan

In practice, residual transceiver hardware impairments inevitably lead to distortion noise which causes the performance loss. In this paper, we study the robust transmission design for a reconfigurable intelligent surface (RIS)-aided secure…

Information Theory · Computer Science 2021-03-09 Gui Zhou , Cunhua Pan , Hong Ren , Kezhi Wang , Zhangjie Peng

Integrated sensing and communication (ISAC) has opened up numerous game-changing opportunities for realizing future wireless systems. In this paper, we propose an ISAC processing framework relying on millimeter-wave (mmWave) massive…

Information Theory · Computer Science 2022-09-12 Zhen Gao , Ziwei Wan , Dezhi Zheng , Shufeng Tan , Christos Masouros , Derrick Wing Kwan Ng , Sheng Chen

Intelligent reflecting surface (IRS) has been considered as a promising technology to alleviate the blockage effect and enhance coverage in millimeter wave (mmWave) communication. To explore the impact of IRS on the performance of mmWave…

Signal Processing · Electrical Eng. & Systems 2022-10-05 Renlong Wei , Qing Xue , Shaodan Ma , Yongjun Xu , Li Yan , Xuming Fang

In the context of integrated sensing and communication (ISAC), a full-duplex (FD) transceiver can operate as a monostatic radar while maintaining communication capabilities. This paper investigates the design of precoders and combiners for…

Signal Processing · Electrical Eng. & Systems 2024-04-03 Murat Bayraktar , Nuria González-Prelcic , Hao Chen

This paper presents a novel framework for enhancing physical-layer security in integrated sensing and communication (ISAC) systems by leveraging the reconfigurability of fluid antenna systems (FAS). We propose a joint precoding and port…

Signal Processing · Electrical Eng. & Systems 2025-10-01 Abdelhamid Salem , Hao Xu , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

Active reconfigurable intelligent surfaces (RISs) can mitigate the double-fading loss of passive reflection in satellite downlinks. However, their gains are limited by random co-channel interference, gain-dependent amplifier noise, and…

Signal Processing · Electrical Eng. & Systems 2026-02-13 Muhammad Khalil , Ke Wang , Jinho Choi

Affine frequency division multiplexing (AFDM) has emerged as a promising integrated sensing and communication (ISAC) waveform due to its intrinsic chirp signalling nature. Nevertheless, practical AFDM-based ISAC still faces two key…

Signal Processing · Electrical Eng. & Systems 2026-04-27 Lingsheng Meng , Yong Liang Guan , Zilong Liu , Yirui Luo , Pingzhi Fan

The fundamental problem in the design of a full-duplex radio is the cancellation of the self-interference (SI) signal generated by the transmitter.Current techniques for suppressing SI rely on generating a copy of the SI signal and…

Networking and Internet Architecture · Computer Science 2016-05-05 Arjun Nadh , Joseph Samuel , Ankit Sharma , S. Aniruddhan , Radha Krishna Ganti

The Differential Privacy (DP) literature often centers on meeting privacy constraints by introducing noise to the query, typically using a pre-specified parametric distribution model with one or two degrees of freedom. However, this…

Cryptography and Security · Computer Science 2024-09-30 Sachin Kadam , Anna Scaglione , Nikhil Ravi , Sean Peisert , Brent Lunghino , Aram Shumavon

In reconfigurable intelligent surface (RIS) aided millimeter-wave (mmWave) communication systems, in order to overcome the limitation of the conventional channel state information (CSI) acquisition techniques, this paper proposes a location…

Information Theory · Computer Science 2024-10-28 Zhe Xing , Rui Wang , Xiaojun Yuan , Jun Wu
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