Radar Sensing with OTFS: Embracing ISI and ICI to Surpass the Ambiguity Barrier
Paper in proceeding, 2021

Orthogonal time frequency space (OTFS) is a promising alternative to orthogonal frequency division multiplexing (OFDM) in high-mobility beyond 5G communications. In this paper, we consider the problem of radar sensing with OTFS joint radar-communications waveform and derive a novel OTFS radar signal model by explicitly taking into account the inter- symbol interference (ISI) and inter-carrier interference (ICI) effects. On the basis of the new model, we show how ISI and ICI phenomena can be turned into an advantage to surpass the maximum unambiguous detection limits in range and velocity, arising in existing OFDM and OTFS radar systems. Moreover, we design a generalized likelihood ratio test based detector/estimator that can embrace ISI and ICI effects. Simulation results illustrate the potential of embracing ISI/ICI and demonstrate its superior detection and estimation performance over conventional base-lines.

OTFS

joint radar-communications

inter-symbol interference

OFDM

inter-carrier interference

Author

Furkan Keskin

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Henk Wymeersch

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

A. Alvarado

Eindhoven University of Technology

2021 IEEE International Conference on Communications Workshops, ICC Workshops 2021 - Proceedings

9473534

2021 IEEE International Conference on Communications Workshops, ICC Workshops 2021
Virtual, Online, ,

Subject Categories

Probability Theory and Statistics

Control Engineering

Signal Processing

DOI

10.1109/ICCWorkshops50388.2021.9473534

More information

Latest update

8/25/2021