no code implementations • 2 Jul 2019 • Qianqian Yang, Mahdi Boloursaz Mashhadi, Deniz Gündüz
In comparison with previous works, the main contributions of DeepCMC are two-fold: i) DeepCMC is fully convolutional, and it can be used in a wide range of scenarios with various numbers of sub-channels and transmit antennas; ii) DeepCMC includes quantization and entropy coding blocks and minimizes a cost function that accounts for both the rate of compression and the reconstruction quality of the channel matrix at the BS.
no code implementations • 23 Oct 2019 • Mahdi Boloursaz Mashhadi, Qianqian Yang, Deniz Gunduz
Massive multiple-input multiple-output (MIMO) systems require downlink channel state information (CSI) at the base station (BS) to better utilize the available spatial diversity and multiplexing gains.
no code implementations • 7 Mar 2020 • Mahdi Boloursaz Mashhadi, Qianqian Yang, Deniz Gunduz
We also propose a distributed version of DeepCMC for a multi-user MIMO scenario to encode and reconstruct the CSI from multiple users in a distributed manner.
no code implementations • 21 Jun 2020 • Mahdi Boloursaz Mashhadi, Deniz Gunduz
Our pruning-based pilot reduction technique reduces the overhead by allocating pilots across subcarriers non-uniformly and exploiting the inter-frequency and inter-antenna correlations in the channel matrix efficiently through convolutional layers and attention module.
no code implementations • 2 Oct 2020 • Mahmoud Essalat, Mahdi Boloursaz Mashhadi, Farokh Marvasti
A major contribution of this work is that it alleviates the need to use simultaneous acceleration signals.
1 code implementation • 14 Nov 2020 • Mahdi Boloursaz Mashhadi, Nir Shlezinger, Yonina C. Eldar, Deniz Gunduz
Wireless communications is often subject to channel fading.
3 code implementations • 4 Feb 2021 • Mahdi Boloursaz Mashhadi, Mikolaj Jankowski, Tze-Yang Tung, Szymon Kobus, Deniz Gunduz
Efficient link configuration in millimeter wave (mmWave) communication systems is a crucial yet challenging task due to the overhead imposed by beam selection.
1 code implementation • 29 Apr 2021 • Matteo Zecchin, Mahdi Boloursaz Mashhadi, Mikolaj Jankowski, Deniz Gunduz, Marios Kountouris, David Gesbert
Efficient millimeter wave (mmWave) beam selection in vehicle-to-infrastructure (V2I) communication is a crucial yet challenging task due to the narrow mmWave beamwidth and high user mobility.
no code implementations • 4 May 2021 • Anahid Robert Safavi, Alberto G. Perotti, Branislav M. Popovic, Mahdi Boloursaz Mashhadi, Deniz Gunduz
A new deep-neural-network (DNN) based error correction encoder architecture for channels with feedback, called Deep Extended Feedback (DEF), is presented in this paper.
no code implementations • 22 Dec 2021 • Mahdi Boloursaz Mashhadi, Deniz Gunduz, Alberto Perotti, Branislav Popovic
We present a new deep-neural-network (DNN) based error correction code for fading channels with output feedback, called deep SNR-robust feedback (DRF) code.
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.
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 • 7 Mar 2023 • Somayeh Aghashahi, Zolfa Zeinalpour-Yazdi, Aliakbar Tadaion, Mahdi Boloursaz Mashhadi, Ahmed Elzanaty
In this letter, we investigate the signal-to-interference-plus-noise-ratio (SINR) maximization problem in a multi-user massive multiple-input-multiple-output (massive MIMO) system enabled with multiple reconfigurable intelligent surfaces (RISs).