2021/03/30 by Musa Furkan Keskin, Keskin, Musa Furkan, Henk Wymeersch +3 · 1 citation
Engineering · #PAPR reduction in OFDM #Radar Systems and Signal Processing #Advanced Fiber Optic Sensors
paper · pdf · doi:10.48550/arxiv.2103.16162
Orthogonal time frequency space (OTFS) is a promising alternative to\northogonal frequency division multiplexing (OFDM) in high-mobility beyond 5G\ncommunications. In this paper, we consider the problem of radar sensing with\nOTFS joint radar-communications waveform and derive a novel OTFS radar signal\nmodel by explicitly taking into account the intersymbol interference (ISI) and\ninter-carrier interference (ICI) effects. On the basis of the new model, we\nshow how ISI and ICI phenomena can be turned into an advantage to surpass the\nmaximum unambiguous detection limits in range and velocity, arising in existing\nOFDM and OTFS radar systems. Moreover, we design a generalized likelihood ratio\ntest based detector/estimator that can embrace ISI and ICI effects. Simulation\nresults illustrate the potential of embracing ISI/ICI and demonstrate its\nsuperior detection and estimation performance over conventional baselines.\n