no code implementations • 18 Apr 2024 • Hamidreza Taghvaee, Mohsen Khalily, Gabriele Gradoni, Rahim Tafazolli
This study delves into the innovative landscape of metasurfaces, with a particular focus on their role in achieving EM illusion (EMI) a facet of paramount significance.
no code implementations • 17 Apr 2024 • David Mulvey, Chuan Heng Foh, Muhammad Ali Imran, Rahim Tafazolli
In a previous paper, we have shown that a recurrent neural network (RNN) can be used to detect cellular network radio signal degradations accurately.
no code implementations • 28 Dec 2023 • Jinfei Wang, Yi Ma, Rahim Tafazolli, Zhibo Pang
The cumulative distribution function (CDF) of a non-central $\chi^2$-distributed random variable (RV) is often used when measuring the outage probability of communication systems.
no code implementations • 10 Oct 2023 • Ahmed Elzanaty, Jiuyu Liu, Anna Guerra, Francesco Guidi, Yi Ma, Rahim Tafazolli
The upcoming 6G technology is expected to operate in near-field (NF) radiating conditions thanks to high-frequency and electrically large antenna arrays.
no code implementations • 24 Aug 2023 • Jinfei Wang, Yi Ma, Rahim Tafazolli
The cumulative distribution function (CDF) of a non-central $\chi^2$-distributed random variable (RV) is often used when measuring the outage probability of communication systems.
1 code implementation • 3 Mar 2023 • Mahdi Boloursaz Mashhadi, Mahnoosh Mahdavimoghadam, Rahim Tafazolli, Walid Saad
For this system, the convergence rate of collaborative learning is derived while considering data heterogeneity, sensor noise levels, and communication errors, then, the drone trajectory that maximizes the final accuracy of the trained NN is obtained.
no code implementations • 26 Jan 2023 • Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli
The design of iterative linear precoding is recently challenged by extremely large aperture array (ELAA) systems, where conventional preconditioning techniques could hardly improve the channel condition.
no code implementations • 14 Sep 2022 • Kaidi Wang, Yi Ma, Mahdi Boloursaz Mashhadi, Chuan Heng Foh, Rahim Tafazolli, Zhi Ding
In this paper, federated learning (FL) over wireless networks is investigated.
no code implementations • 4 Aug 2022 • Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli, Fei Tong
The basic concept of COP is to apply vector perturbation (VP) in the constellation domain instead of symbol domain; as often used in conventional techniques.
no code implementations • 4 Aug 2022 • Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli
With imperfect CSIT, the proposed approach can still provide remarkable user capacity at limited cost of transmit-power efficiency.
no code implementations • 19 Jan 2022 • Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli, Fan Wang
Finally, it is shown that the network-ELAA can offer significant coverage extension (50% or more in most of cases) when comparing with the single-AP scenario.
no code implementations • 3 Oct 2021 • Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli, Zhibo Pang
In addition, a combinatorial approach of the MF beamforming and grouped space-time block code (G-STBC) is proposed to further mitigate the detrimental impact of the CSIT uncertainty.
no code implementations • 24 Dec 2020 • Konstantinos Nikitopoulos, Marcin Filo, Chathura Jayawardena, Rahim Tafazolli
We report gains that we have managed to verify, and we also discuss remaining challenges, missing algorithmic components and future research directions that would be required towards highly efficient, future mobile systems that can efficiently exploit the gains of non-linear, base-station processing.
Information Theory Signal Processing Information Theory
no code implementations • 14 Apr 2020 • Songyan Xue, Yi Ma, Na Yi, Rahim Tafazolli
Otherwise, it is called non-systematic waveform, where no artificial design is involved.