3 papers
cs.IT2025
Asymptotically Optimal Aperiodic and Periodic Sequence Sets with Low Ambiguity Zone Through Locally Perfect Nonlinear Functions
Zheng Wang, Zhengchun Zhou, Avik Ranjan Adhikary +3
Low ambiguity zone (LAZ) sequences play a crucial role in modern integrated sensing and communication (ISAC) systems. In this paper, we introduce a novel class of functions known a…
cs.IT2024
Oversampled Low Ambiguity Zone Sequences for Channel Estimation over Doubly Selective Channels
Zhi Gu, Zhengchun Zhou, Pingzhi Fan +2
Pilot sequence design over doubly selective channels (DSC) is challenging due to the variations in both the time- and frequency-domains. Against this background, the contribution o…
eess.SP2024
Grid Evolution for Doubly Fractional Channel Estimation in OTFS Systems
Xiangjun Li, Pingzhi Fan, Qianli Wang +1
In orthogonal time-frequency space communications, the performances of existing on-grid and off-grid channel estimation (CE) schemes are determined by the delay-Doppler (DD) grid d…