5 papers · 1 filter
Comparison of OTFS and OFDM for RIS-aided Systems in the Presence of Phase Noise
Stephen McWade, Arman Farhang
In this paper, we investigate the performance of RIS-aided orthogonal time frequency space (OTFS) and orthogonal frequency division multiplexing (OFDM) systems in the presence of o…
Delay-Doppler Multiplexing With Global Filtering
Jialiang Zhu, Mohsen Bayat, Arman Farhang
This paper proposes a novel modulation technique called globally filtered orthogonal time frequency space (GF-OTFS) which integrates single-carrier frequency division multiple acce…
Synchronization for Multiuser Uplink OTFS
Mohsen Bayat, Sanoopkumar P. S., Arman Farhang
In this paper, we propose time and frequency synchronization techniques for the uplink of multiuser orthogonal time frequency space (MU-OTFS) in high-mobility scenarios. We introdu…
Reduced Overhead Channel Estimation for OTFS With Split Pilot
Danilo Lelin Li, Sanoopkumar P. S., Arman Farhang
Orthogonal time frequency space modulation (OTFS) is currently one of the most robust modulation techniques for high Doppler channels. However, to reap the benefits of OTFS, an acc…
SC-FDMA as a Delay-Doppler Domain Modulation Technique
Arman Farhang, Mohsen Bayat
This paper compares orthogonal time frequency space (OTFS) modulation and single-carrier frequency division multiple access (SC-FDMA). It shows that these are equivalent except for…