no code implementations • 31 Jan 2024 • Muhammad Farooq, Le-Nam Tran, Fatemeh Golpayegani, Nima Afraz
We address these security concerns from a physical layer security aspect by investigating achievable secrecy rates in wireless vehicular networks.
no code implementations • 5 May 2023 • Vaibhav Kumar, Marwa Chafii, A. Lee Swindlehurst, Le-Nam Tran, Mark F. Flanagan
Integrated sensing and communication (ISAC) is expected to be offered as a fundamental service in the upcoming sixth-generation (6G) communications standard.
no code implementations • 28 Feb 2023 • Vaibhav Kumar, Anastasios Papazafeiropoulos, Muhammad Fainan Hanif, Le-Nam Tran, Mark F. Flanagan
At the same time, the complexity of the proposed scheme grows linearly with the number of IRS elements while that of the benchmark scheme is proportional to the cube of the number of IRS elements.
no code implementations • 20 Sep 2022 • Muhammad Farooq, Hien Quoc Ngo, Le-Nam Tran
We consider the problem of max-min fairness for uplink cell-free massive multiple-input multiple-output (MIMO) subject to per-user power constraints.
no code implementations • 1 Sep 2022 • Anshu Mukherjee, Vaibhav Kumar, Derrick Wing Kwan Ng, Le-Nam Tran
Security and energy efficiency have become crucial features in the modern-era wireless communication.
1 code implementation • 25 Aug 2022 • Vaibhav Kumar, Rui Zhang, Marco Di Renzo, Le-Nam Tran
In this letter, we consider the fundamental problem of jointly designing the transmit beamformers and the phase-shifts of the intelligent reflecting surface (IRS) / reconfigurable intelligent surface (RIS) to minimize the transmit power, subject to quality-of-service constraints at individual users in an IRS-assisted multiuser multiple-input single-output downlink communication system.
no code implementations • 17 May 2022 • Muhammad Farooq, Tung Thanh Vu, Hien Quoc Ngo, Le-Nam Tran
It is anticipated that future wireless networks will jointly serve both FL and downlink non-FL user groups in the same time-frequency resource.
no code implementations • 17 May 2022 • Muhammad Farooq, Tung T. Vu, Hien Quoc Ngo, Le-Nam Tran
We propose a communication scheme that serves the downlink of the non-FL users (UEs) and the uplink of FL UEs in each half of the frequency band.
no code implementations • 13 Jan 2022 • Muhammad Farooq, Markku Juntti, Le-Nam Tran
We consider a multigroup multicast cell-free multiple-input multiple-output (MIMO) downlink system with short-term power constraints.
no code implementations • 12 Jan 2022 • Muhammad Farooq, Hien Quoc Ngo, Le-Nam Tran
The known methods use off-the-shelf convex solvers, which basically implement an interior-point algorithm, to solve the derived convex problems.
no code implementations • 1 Jan 2021 • Yuris Mulya Saputra, Dinh Thai Hoang, Diep N. Nguyen, Le-Nam Tran, Shimin Gong, Eryk Dutkiewicz
Federated learning (FL) can empower Internet-of-Vehicles (IoV) networks by leveraging smart vehicles (SVs) to participate in the learning process with minimum data exchanges and privacy disclosure.
no code implementations • 10 Dec 2020 • Anshu Mukherjee, Björn Ottersten, Le-Nam Tran
In the first method we capitalize on the accelerated DC algorithm which requires solving a sequence of convex subproblems, for which we propose an efficient iterative algorithm where each iteration admits a closed-form solution.
Information Theory Signal Processing Information Theory
no code implementations • 9 Dec 2020 • Nemanja Stefan Perović, Le-Nam Tran, Marco Di Renzo, Mark F. Flanagan
The main difficulty concerning optimizing the mutual information (MI) in reconfigurable intelligent surface (RIS)-aided communication systems with discrete signaling is the inability to formulate this optimization problem in an analytically tractable manner.
Information Theory Information Theory
no code implementations • 15 Sep 2020 • Muhammad Farooq, Hien Quoc Ngo, Een-Kee Hong, Le-Nam Tran
Simulation results for large-scale cell-free massive MIMO show that the four utility functions can deliver nearly uniformed services to all users.
no code implementations • 14 May 2019 • Thuy M. Pham, Ronan Farrell, Le-Nam Tran
In this paper, we study the sum rate maximization for successive zero-forcing dirty-paper coding (SZFDPC) with per-antenna power constraint (PAPC).