no code implementations • 25 Jan 2024 • Xinwei Yue, Jin Xie, Chongjun Ouyang, Yuanwei Liu, Xia Shen, Zhiguo Ding
The numerical results are presented and show that: 1) ASTARS-NOMA with pSIC outperforms ASTARS assisted-orthogonal multiple access (ASTARS-OMA) in terms of outage probability and ergodic data rate; 2) The outage probability of ASTARS-NOMA can be further reduced within a certain range by increasing the power amplification factors; 3) The system throughputs of ASTARS-NOMA are superior to that of ASTARS-OMA in both delay-limited and delay-tolerant transmission modes.
no code implementations • 11 Jan 2024 • Yuanwei Liu, Chongjun Ouyang, Zhaolin Wang, Jiaqi Xu, Xidong Mu, A. Lee Swindlehurst
This evolution is giving rise to the emergence of near-field communications (NFC) in future wireless systems.
no code implementations • 21 Dec 2023 • Zhenqiao Cheng, Nanxi Li, Jianchi Zhu, Xiaoming She, Chongjun Ouyang, Peng Chen
A pioneering secure transmission scheme is proposed, which harnesses movable antennas (MAs) to optimize antenna positions for augmenting the physical layer security.
no code implementations • 11 Nov 2023 • Yunan Sun, Hao Xu, Chongjun Ouyang, Hongwen Yang
Numerical results are presented to verify the effectiveness of the proposed algorithm and the superiority of the proposed MA-based system in terms of sum-rate.
no code implementations • 22 Sep 2023 • Zhenqiao Cheng, Nanxi Li, Jianchi Zhu, Xiaoming She, Chongjun Ouyang, Peng Chen
A novel over-the-air computation (AirComp) framework, empowered by the incorporation of movable antennas (MAs), is proposed to significantly enhance computation accuracy.
no code implementations • 20 Sep 2023 • Zhenqiao Cheng, Nanxi Li, Jianchi Zhu, Chongjun Ouyang
A novel multiuser communication system with movable antennas (MAs) is proposed, where the antenna position optimization is exploited to enhance the downlink sum-rate.
no code implementations • 22 Feb 2023 • Chongjun Ouyang, Hao Xu, Xujie Zang, Hongwen Yang
This work proposes a novel joint design for multiuser multiple-input multiple-output wiretap channels.
no code implementations • 28 Dec 2022 • Chongjun Ouyang, Ali Bereyhi, Saba Asaad, Ralf R. Müller, Hongwen Yang
This work proposes a novel joint receive antenna selection and precoding scheme for multiuser multiple-input multiple-output uplink transmission that relies only on the long-term statistics of the CSI.
no code implementations • 28 Dec 2022 • Chongjun Ouyang, Ali Bereyhi, Saba Asaad, Ralf R. Müller, Hongwen Yang
This work studies a low-complexity design for reconfigurable intelligent surface (RIS)-aided multiuser multiple-input multiple-output systems.
no code implementations • 20 Jul 2022 • Chongjun Ouyang, Hao Xu, Xujie Zang, Hongwen Yang
This paper considers a lens antenna array-assisted millimeter wave (mmWave) multiuser multiple-input multiple-output (MU-MIMO) system.
no code implementations • 20 Sep 2020 • Chongjun Ouyang, Sheng Wu, Chunxiao Jiang, Julian Cheng, Hongwen Yang
Physical layer security is investigated over mixture Gamma (MG) distributed fading channels with discrete inputs.
no code implementations • 11 Jun 2020 • Chongjun Ouyang, Sheng Wu, Chunxiao Jiang, Derrick Wing Kwan Ng, Hongwen Yang
To provide system design insights for practical communication systems equipped with the frequency diverse array (FDA), this paper investigates the secrecy performance of FDA systems exploiting finite-alphabet inputs over fluctuating two-ray (FTR) fading channels.