175 citations · 874 across the 35 of their papers we have counts for
39 papers
OTFS -- A Mathematical Foundation for Communication and Radar Sensing in the Delay-Doppler Domain
Saif Khan Mohammed, Ronny Hadani, Ananthanarayanan Chockalingam +1
Orthogonal time frequency space (OTFS) is a framework for communication and active sensing that processes signals in the delay-Doppler (DD) domain. This paper explores three key fe…
OTFS -- Predictability in the Delay-Doppler Domain and its Value to Communication and Radar Sensing
Saif Khan Mohammed, Ronny Hadani, Ananthanarayanan Chockalingam +1
In our first paper [2] we explained why the Zak-OTFS input-output (I/O) relation is predictable and non-fading when the delay and Doppler periods are greater than the effective cha…
Low Complexity Channel Estimation for OTFS Modulation with Fractional Delay and Doppler
Imran Ali Khan, Saif Khan Mohammed
We consider the problem of accurate channel estimation for OTFS based systems with few transmit/receive antennas, where additional sparsity due to large number of antennas is not a…
Spectral Efficiency of OTFS Based Orthogonal Multiple Access with Rectangular Pulses
Venkatesh Khammammetti, Saif Khan Mohammed
In this paper we consider Orthogonal Time Frequency Space (OTFS) modulation based multiple-access (MA). We specifically consider Orthogonal MA methods (OMA) where the user terminal…
Low Complexity Precoding and Detection in Multi-user Massive MIMO OTFS Downlink
Brijesh Chander Pandey, Saif Khan Mohammed, P. Raviteja +2
We consider the problem of degradation in performance of multi-carrier multi-user massive MIMO systems when channel induced Doppler spread is high. Recently, Orthogonal Time Freque…
OTFS Based Random Access Preamble Transmission For High Mobility Scenarios
Alok Kumar Sinha, Saif Khan Mohammed, P. Raviteja +2
We consider the problem of uplink timing synchronization for Orthogonal Time Frequency Space (OTFS) modulation based systems where information is embedded in the delay-Doppler (DD)…