no code implementations • 11 Jan 2024 • Yixian Zheng, Rang Liu, Ming Li, Qian Liu
Integrated sensing and communication (ISAC) is an encouraging wireless technology which can simultaneously perform both radar and communication functionalities by sharing the same transmit waveform, spectral resource, and hardware platform.
no code implementations • 8 Jan 2024 • Yun Yang, Zhiping Lu, Ming Li, Rang Liu, Qian Liu
Motivated by this fact, in this paper we first investigate the amplification principle of typical active RIS and propose a more accurate amplification model based on amplifier hardware characteristics.
no code implementations • 17 Nov 2023 • Haocheng Zhang, Rang Liu, Ming Li, Wei Wang, Qian Liu
Extensive experimental results confirm the effectiveness of our proposed MADRL framework in improving both sensing and communication performance through the utilization of target-mounted STARS.
no code implementations • 17 Sep 2023 • Qi Zhu, Ming Li, Rang Liu, Qian Liu
Integrated sensing and communication (ISAC), which simultaneously performs sensing and communication functions within a shared frequency band and hardware platform, has emerged as a promising technology for future wireless systems.
no code implementations • 7 Aug 2023 • Zichao Xiao, Rang Liu, Ming Li, Qian Liu
Therefore, the proposed joint estimation algorithm can achieve larger processing gains and higher resolution by fully exploiting echo signals and jointly estimating the angle-range-velocity information.
no code implementations • 30 May 2023 • Peishi Li, Zichao Xiao, Ming Li, Rang Liu, Qian Liu
Integrated sensing and communication (ISAC) is a promising technology in future wireless systems owing to its efficient hardware and spectrum utilization.
no code implementations • 22 Feb 2023 • Honghao Luo, Rang Liu, Ming Li, Qian Liu
Integrated sensing and communication (ISAC) has been envisioned as a promising technique to alleviate the spectrum congestion problem.
no code implementations • 21 Feb 2023 • Qi Zhu, Ming Li, Rang Liu, Qian Liu
Integrated sensing and communication (ISAC) is recognized as a promising technology with great potential in saving hardware and spectrum resources, since it simultaneously realizes radar detection and user communication functions in the fully-shared platform.
no code implementations • 26 Jan 2023 • Rang Liu, Ming Li, Qian Liu, A. Lee Swindlehurst
Two optimization problems are formulated for maximizing the achievable sum-rate of the multi-user communications under an SNR constraint for target detection or a CRB constraint for parameter estimation, the transmit power budget, and the unit-modulus constraint of the RIS reflection coefficients.
no code implementations • 1 Dec 2022 • Jinjin Chu, Rang Liu, Ming Li, Yang Liu, Qian Liu
Integrated sensing and communication (ISAC), which allows individual radar and communication systems to share the same spectrum bands, is an emerging and promising technique for alleviating spectrum congestion problems.
no code implementations • 25 Oct 2022 • Rang Liu, Zhu Bo, Ming Li, Qian Liu
To overcome the performance bottleneck of these approaches, in this letter we propose an end-to-end learning based approach to jointly optimize the modulation orders, the transmit precoding and the receive detection for an SLP communication system.
no code implementations • 5 Oct 2022 • Qi Zhu, Ming Li, Rang Liu, Yang Liu, Qian Liu
Affected by the "double fading" effect, however, conventional passive RIS cannot bring considerable performance improvement when users are not close enough to RIS.
no code implementations • 10 Aug 2022 • Pengfei Ni, Rang Liu, Ming Li, Qian Liu
In an effort to further exploit multiple-antenna diversities, we also consider the dynamic subarray architecture and propose a novel antenna design algorithm for the analog beamforming design.
no code implementations • 10 Aug 2022 • Pengfei Ni, Ming Li, Rang Liu, Qian Liu
Cell-free networks are regarded as a promising technology to meet higher rate requirements for beyond fifth-generation (5G) communications.
no code implementations • 3 Aug 2022 • Honghao Luo, Rang Liu, Ming Li, Yang Liu, Qian Liu
Integrated sensing and communication (ISAC) has been envisioned as a promising technology to tackle the spectrum congestion problem for future networks.
no code implementations • 17 Jun 2022 • Rang Liu, Ming Li, Honghao Luo, Qian Liu, A. Lee Swindlehurst
Integrated sensing and communication (ISAC) is emerging as a key enabler to address the growing spectrum congestion problem and satisfy increasing demands for ubiquitous sensing and communication.
no code implementations • 13 Apr 2022 • Wenhao Cai, Rang Liu, Ming Li, Yang Liu, Qingqing Wu, Qian Liu
Intelligent reflecting surface (IRS) has been regarded as a promising and revolutionary technology for future wireless communication systems owing to its capability of tailoring signal propagation environment in an energy/spectrum/hardware-efficient manner.
no code implementations • 1 Mar 2022 • Rang Liu, Ming Li, A. Lee Swindlehurst
In this paper, we investigate the potential of employing reconfigurable intelligent surface (RIS) in integrated sensing and communication (ISAC) systems.
no code implementations • 16 Dec 2021 • Rang Liu, Ming Li, Yang Liu, Qingqing Wu, Qian Liu
Reconfigurable intelligent surface (RIS) is a promising technology for 6G networks owing to its superior ability to enhance the capacity and coverage of wireless communications by smartly creating a favorable propagation environment.
no code implementations • 11 Aug 2021 • Rang Liu, Ming Li, Qian Liu, A. Lee Swindlehurst
In this paper, we consider multi-input multi-output (MIMO) DFRC systems and focus on transmit beamforming designs to provide both radar sensing and multi-user communications.
no code implementations • 24 Jul 2021 • Yanan Ma, Rang Liu, Yang Liu, Ming Li, Qian Liu
Reconfigurable intelligent surfaces (RISs) have been deemed as one of potential components of future wireless communication systems because they can adaptively manipulate the wireless propagation environment with low-cost passive devices.
no code implementations • 27 Jun 2021 • Sifan Liu, Pengfei Ni, Rang Liu, Yang Liu, Ming Li, Qian Liu
During the dynamical access process, an iterative algorithm is proposed to alternatively obtain the active and passive beamforming.
no code implementations • 5 Jan 2021 • Wenhao Cai, Rang Liu, Yang Liu, Ming Li, Qian Liu
Therefore, the practical phase shift model, which can describe the difference of IRS phase shift responses for the signals with different frequencies, should be utilized in the IRS optimization for wideband and multi-band systems.
no code implementations • 29 Jul 2020 • Rang Liu, Ming Li, Qian Liu, A. Lee Swindlehurst, Qingqing Wu
Intelligent reflecting surfaces (IRS) have been proposed as a revolutionary technology owing to its capability of adaptively reconfiguring the propagation environment in a cost-effective and hardware-efficient fashion.
no code implementations • 3 Sep 2019 • Rang Liu, Hongyu Li, Ming Li, Qian Liu
In this paper we investigate the problem of precoder design for a low-resolution IRS-based transmitter to implement multi-user MISO/MIMO wireless communications.