1 citations · 2 across the 7 of their papers we have counts for
7 papers
RIS-Aided Unsourced Multiple Access (RISUMA): Coding Strategy and Performance Limits
Mohammad Javad Ahmadi, Mohammad Kazemi, Tolga M. Duman
This paper considers an unsourced random access (URA) set-up equipped with a passive reconfigurable intelligent surface (RIS), where a massive number of unidentified users (only a…
An ODMA-Based Unsourced Random Access Scheme with a Multiple Antenna Receiver
Mert Ozates, Mohammad Kazemi, Tolga M. Duman
We investigate the unsourced random access scheme assuming that the base station is equipped with multiple antennas, and propose a high-performing solution utilizing on-off-divisio…
Unsourced Random Access Using Multiple Stages of Orthogonal Pilots: MIMO and Single-Antenna Structures
Mohammad Javad Ahmadi, Mohammad Kazemi, Tolga M. Duman
We study the problem of unsourced random access (URA) over Rayleigh block-fading channels with a receiver equipped with multiple antennas. We propose a slotted structure with multi…
Over-the-Air Federated Edge Learning with Hierarchical Clustering
Ozan Aygün, Mohammad Kazemi, Deniz Gündüz +1
We examine federated learning (FL) with over-the-air (OTA) aggregation, where mobile users (MUs) aim to reach a consensus on a global model with the help of a parameter server (PS)…
Hierarchical Over-the-Air Federated Edge Learning
Ozan Aygün, Mohammad Kazemi, Deniz Gündüz +1
Federated learning (FL) over wireless communication channels, specifically, over-the-air (OTA) model aggregation framework is considered. In OTA wireless setups, the adverse channe…
On LDPC Codes for Gaussian Interference Channels
Shahrouz Sharifi, A. Korhan Tanc, Tolga M. Duman
In this paper, we focus on the two-user Gaussian interference channel (GIC), and study the Han-Kobayashi (HK) coding/decoding strategy with the objective of designing low-density p…