no code implementations • 26 Sep 2023 • Alphan Sahin, XiaoFeng Wang
In this study, we propose a non-coherent over-the-air computation scheme to calculate the majority vote (MV) reliably in fading channels.
no code implementations • 11 Aug 2023 • Alphan Sahin
In this study, we propose using an over-the-air computation (OAC) scheme for the federated k-means clustering algorithm to reduce the per-round communication latency when it is implemented over a wireless network.
no code implementations • 20 Oct 2022 • Alphan Sahin, Rui Yang
In such scenarios, information theoretical results show that harnessing the interference in a multiple access channel for computation, i. e., over-the-air computation (OAC), can provide a significantly higher achievable computation rate than separating communication and computation tasks.
no code implementations • 13 Oct 2022 • Alphan Sahin
In this study, we propose a digital over-the-air computation (OAC) scheme for achieving continuous-valued (analog) aggregation for federated edge learning (FEEL).
no code implementations • 22 Sep 2022 • Alphan Sahin, Rui Yang
In this study, a digital over-the-air computation (OAC) scheme for achieving continuous-valued gradient aggregation is proposed.
1 code implementation • 20 Sep 2022 • Alphan Sahin
In this study, we propose a general-purpose synchronization method that allows a set of software-defined radios (SDRs) to transmit or receive any in-phase/quadrature data with precise timings while maintaining the baseband processing in the corresponding companion computers.
no code implementations • 22 Jun 2022 • Safi Shams Muhtasimul Hoque, Mohammad Hassan Adeli, Alphan Sahin
We compare our proposed scheme with one-bit broadband digital aggregation (OBDA) and show that the output-power back-off (OBO) requirement of the transmitters with an adjacent-channel-leakage ratio (ACLR) constraint for CSC-MV is lower than the one with OBDA.
no code implementations • 26 Dec 2021 • Alphan Sahin, Bryson Everette, Safi Shams Muhtasimul Hoque
By taking the delay spread and time-synchronization errors into account, the MV at the ES is obtained with an energy detector.
no code implementations • 2 Nov 2021 • Alphan Sahin, Bryson Everette, Safi Shams Muhtasimul Hoque
In this study, we propose an over-the-air computation (AirComp) scheme for federated edge learning (FEEL).
no code implementations • 28 Sep 2021 • Alphan Sahin, Safi Shams Muhtasimul Hoque, Chao-Yu Chen
For radar functionality, CSC-IM maintains the good autocorrelation (AC) properties of a chirp by ensuring that the transmitted CSCs are separated apart sufficiently in the time domain through index separation (IS).
no code implementations • 25 Oct 2020 • Safi Shams Muhtasimul Hoque, Chao-Yu Chen, Alphan Sahin
In this study, we propose a wideband index modulation (IM) based on circularly-shifted chirps.
no code implementations • 7 Oct 2020 • Safi Shams Muhtasimul Hoque, Alphan Sahin
In this study, we analyze index modulation (IM) based on circularly-shifted chirps (CSCs) for dual-function radar & communication (DFRC) systems.
no code implementations • 9 Aug 2020 • Alphan Sahin, Nozhan Hosseini, Hosseinali Jamal, Safi Shams Muhtasimul Hoque, David W. Matolak
In this study, we propose a framework for chirp-based communications by exploiting discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM).