8 papers · 1 filter
Channel Estimation using 5G Sounding Reference Signals: A Delay-Doppler Domain Approach
Danilo Lelin Li, Ramtin Rabiee, Arman Farhang
Delay-Doppler multicarrier modulation (DDMC) techniques have been among the central topics of research for high-Doppler channels. However, a complete transition to DDMC-based wavef…
Unique Word Channel Estimation for Oversampled OTFS
Radim Zedka, Roman Marsalek, Marek Bobula +1
Practical aspects of orthogonal time frequency space (OTFS), such as channel estimation and its performance in fractional delay-Doppler (DD) channels, are a lively topic in the OTF…
Waveform-domain NOMA: An Enabler for ISAC in Uplink Transmission
Jialiang Zhu, Hamza Haif, Abdelali Arous +2
According to the recent 3GPP decisions on 6G air interface, orthogonal frequency-division multiplexing (OFDM)-based waveforms are the primary candidates for future integrated sensi…
A Unified Framework for Adaptive Waveform Processing in Next Generation Wireless Networks
Abdelali Arous, Hamza Haif, Arman Farhang +1
The emergence of alternative multiplexing domains to the time-frequency domains, e.g., the delay-Doppler and chirp domains, offers a promising approach for addressing the challenge…
Time and Frequency Synchronization for Multiuser OTFS in Uplink
Mohsen Bayat, Sanoopkumar P. S., Arman Farhang
In this paper, we propose time and frequency synchronization techniques for uplink multiuser OTFS (MU-OTFS) systems in high-mobility scenarios. This work focuses on accurately esti…
PAPR of DFT-s-OTFS with Pulse Shaping
Jialiang Zhu, Sanoopkumar P. S., Arman Farhang
Orthogonal Time Frequency Space (OTFS) suffers from high peak-to-average power ratio (PAPR) when the number of Doppler bins is large. To address this issue, a discrete Fourier tran…