161 citations · 295 across the 35 of their papers we have counts for
43 papers
Synchronization and Channel Estimation of OTFS with RF Impairments
Sanoopkumar P. S., Mohsen Bayat, Stephen McWade +1
Orthogonal Time Frequency Space (OTFS) modulation is a promising waveform for future wireless networks. However, its resilience to RF impairments remains relatively understudied. L…
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…
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…
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…
RIS-Assisted OTFS Communications: Phase Configuration via Received Energy Maximization
Mohamad H. Dinan, Arman Farhang
In this paper, we explore the integration of two revolutionary technologies, reconfigurable intelligent surfaces (RISs) and orthogonal time frequency space (OTFS) modulation, to en…
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…
A Unified Framework for Pulse-Shaping on Delay-Doppler Plane
Mohsen Bayat, Arman Farhang
Delay-Doppler multiplexing has recently stirred a great deal of attention in research community. While multiple studies have investigated pulse-shaping aspects of this technology,…
Downlink Transmission in FBMC-based Massive MIMO with Co-located and Distributed Antennas
Hamed Hosseiny, Arman Farhang, Behrouz Farhang-Boroujeny
This paper introduces a practical precoding method for the downlink of Filter Bank Multicarrier-based (FBMC-based) massive multiple-input multiple-output (MIMO) systems. The propos…
A Generalized Framework for Pulse-Shaping on Delay-Doppler Plane
Mohsen Bayat, Arman Farhang
The primary objective of this paper is to establish a generalized framework for pulse-shaping on the delay-Doppler plane. To this end, we classify delay-Doppler pulse-shaping techn…
Truncated Turbo Equalizer with SIC for OTFS
Sanoopkumar P. S., Stephen McWade, Arman Farhang
Orthogonal time frequency space (OTFS) is a promising candidate waveform for the next generation wireless communication systems. OTFS places data in the delay-Doppler (DD) domain,…
Low-Complexity Reliability-Based Equalization and Detection for OTFS-NOMA
Stephen McWade, Arman Farhang, Mark F. Flanagan
Orthogonal time frequency space (OTFS) modulation has recently emerged as a potential 6G candidate waveform which provides improved performance in high-mobility scenarios. In this…
Practical Synchronization for OTFS
Mohsen Bayat, Sanoopkumar P. S., Arman Farhang
In the existing literature on joint timing and frequency synchronization of orthogonal time frequency space modulation (OTFS), practically infeasible impulse pilot with large peak-…
RIS Meets Aerodynamic HAPS: A Multi-objective Optimization Approach
Arman Azizi, Arman Farhang
In this paper, we propose a novel network architecture for integrating terrestrial and non-terrestrial networks (NTNs) to establish connection between terrestrial ground stations w…
Joint Channel Estimation and Equalization in Massive MIMO Using a Single Pilot Subcarrier
Danilo Lelin Li, Arman Farhang
The focus of this letter is on the reduction of the large pilot overhead in orthogonal frequency division multiplexing (OFDM) based massive multiple-input multiple-output (MIMO) sy…
Low-Complexity Equalization and Detection for OTFS-NOMA
Stephen McWade, Mark F. Flanagan, Arman Farhang
Orthogonal time frequency space (OTFS) modulation has recently emerged as a potential 6G candidate waveform which provides improved performance in high-mobility scenarios. In this…
Downlink Precoding for FBMC-based Massive MIMO with Imperfect Channel Reciprocity
Hamed Hosseiny, Arman Farhang, Behrouz Farhang-Boroujeny
In this paper, a practical precoding method for the downlink of filter bank multicarrier-based (FBMC-based) massive multiple-input multiple-output (MIMO) is developed. The proposed…
Joint CFO and Channel Estimation for RIS-aided Multi-user Massive MIMO Systems
Sumin Jeong, Arman Farhang, Nemanja Stefan Perović +1
Accurate channel estimation is essential to achieve the performance gains promised by the use of reconfigurable intelligent surfaces (RISs) in wireless communications. In the uplin…
OTFS Without CP in Massive MIMO: Breaking Doppler Limitations with TR-MRC and Windowing
Danilo Lelin Li, Arman Farhang
Orthogonal time frequency space (OTFS) modulation has recently emerged as an effective waveform to tackle the linear time-varying channels. In OTFS literature, approximately consta…
FBMC Receiver Design and Analysis for Medium and Large Scale Antenna Systems
Hamed Hosseiny, Arman Farhang, Behrouz Farhang-Boroujeny
In this paper, we design receivers for filter bank multicarrier-based (FBMC-based) massive MIMO considering practical aspects such as channel estimation and equalization. In partic…
Resource Allocation for Mixed Numerology NOMA
Stephen McWade, Mark F. Flanagan, Juquan Mao +2
6G wireless networks will require the flexibility to accommodate an extremely diverse set of service types. This necessitates the use of mixed numerologies to accommodate different…
Low-Complexity Joint CFO and Channel Estimation for RIS-aided OFDM Systems
Sumin Jeong, Arman Farhang, Nemanja Stefan Perović +1
Accurate channel estimation is essential for achieving the performance gains offered by reconfigurable intelligent surface (RIS)-aided wireless communications. A variety of channel…
Spectral Domain Spline Graph Filter Bank
Amir Miraki, Hamid Saeedi-Sourck, Nicola Marchetti +1
In this paper, we present a structure for two-channel spline graph filter bank with spectral sampling (SGFBSS) on arbitrary undirected graphs. Our proposed structure has many desir…
Evolving Intelligent Reflector Surface towards 6G for Public Health: Application in Airborne Virus Detection
Harun Šiljak, Nouman Ashraf, Michael Taynnan Barros +5
While metasurface based intelligent reflecting surfaces (IRS) are an important emerging technology for future generations of wireless connectivity in its own right, the plans for t…