no code implementations • 19 Mar 2024 • Hao Jiang, Wangqi Shi, Zaichen Zhang, Cunhua Pan, Qingqing Wu, Feng Shu, Ruiqi Liu, Jiangzhou Wang
Then, we develop a beam domain channel model based on the proposed sub-array partition framework for large-scale RIS-enabled UAV-to-vehicle communication systems, which can be used to efficiently capture the sparse features in RIS-enabled UAV-to-vehicle channels in both near-field and far-field ranges.
no code implementations • 24 Jul 2023 • Baiping Xiong, Zaichen Zhang, Jiangzhou Wang
Large-scale reconfigurable intelligent surface (RIS) can effectively enhance the performance of millimeter wave (mmWave) unmanned aerial vehicle (UAV) to ground communication link with obstructed line-of-sight (LoS) path by exploiting more reflecting units.
no code implementations • 16 Jul 2023 • Baiping Xiong, Zaichen Zhang, Yingmeng Ge, Haibo Wang, Hao Jiang, Liang Wu, Ziyang Zhang
In this paper, we consider the channel modeling of a heterogeneous vehicular integrated sensing and communication (ISAC) system, where a dual-functional multi-antenna base station (BS) intends to communicate with a multi-antenna vehicular receiver (MR) and sense the surrounding environments simultaneously.
no code implementations • 16 Oct 2022 • Jianxin Dai, Jin Ge, Kangda Zhi, Cunhua Pan, Zaichen Zhang, Jiangzhou Wang, Xiaohu You
Finally, the numerical results demonstrate the correctness of our derived expressions and the benefits of deploying large-size RISs into cell-free mMIMO systems.
no code implementations • 6 May 2022 • Jian Dang, Zaichen Zhang, Yewei Li, Liang Wu, Bingcheng Zhu, Lei Wang
Reconfigurable intelligent surface (RIS) can assist terahertz wireless communication to restore the fragile line-of-sight links and facilitate beam steering.
no code implementations • 21 Jan 2022 • Haibo Wang, Zaichen Zhang, Bingcheng Zhu, Yidi Zhang
Optical reconfigurable intelligent surface (ORIS) is an emerging technology that can achieve reconfigurable optical propagation environments by precisely adjusting signal's reflection and shape through a large number of passive reflecting elements.
no code implementations • 4 Dec 2021 • Yuhao Qi, Jian Dang, Zaichen Zhang, Liang Wu, Yongpeng Wu
However, existing works show that there remains residual interference after single-tap equalization even with infinite number of BS antennas, leading to a limitation of achievable signal-to-interference-plus-noise ratio (SINR) performance.
no code implementations • 9 Sep 2021 • Kehan Zhang, Zaichen Zhang, Bingcheng Zhu
Traditional visible light positioning (VLP) systems estimate receivers' coordinates based on the known light-emitting diode (LED) coordinates.
no code implementations • 16 Jun 2020 • Chenhao Qi, Peihao Dong, Wenyan Ma, Hua Zhang, Zaichen Zhang, Geoffrey Ye Li
The accuracy of channel state information (CSI) acquisition directly affects the performance of millimeter wave (mmWave) communications.
no code implementations • 20 Dec 2018 • Xiao Chen, Julian Cheng, Zaichen Zhang, Liang Wu, Jian Dang
The GDR scheme can achieve higher data rate than the conventional one-hot vector scheme with comparable BLER performance.
Information Theory Information Theory
no code implementations • 2 Apr 2018 • Xiaosi Tan, Weihong Xu, Yair Be'ery, Zaichen Zhang, Xiaohu You, Chuan Zhang
Numerical results are presented to demonstrate the performance of the DNN detectors in comparison with various BP modifications.