6 papers
Data-aided Channel Estimation and Sensing With Sparse Bayesian Learning for AFDM-ISAC System
Yirui Luo, Yong Liang Guan, Yao Ge +3
Affine frequency division multiplexing (AFDM) has emerged as a promising waveform for next-generation integrated sensing and communication (ISAC) systems. However, it becomes chall…
Enabling Flexible AFDM-ISAC Design: When Ambiguity Shaping Meets PAPR Control
Lingsheng Meng, Yong Liang Guan, Zilong Liu +2
Affine frequency division multiplexing (AFDM) has emerged as an enabling waveform for integrated sensing and communication (ISAC) due to its intrinsic chirp signaling nature. Never…
Local Ambiguity Shaping for Doppler-Resilient Sequences Under Spectral and PAPR Constraints
Shi He, Lingsheng Meng, Yao Ge +3
This paper focuses on designing Doppler-resilient sequences with low local Ambiguity Function (AF) sidelobes, subject to certain spectral and Peak-to-Average Power Ratio (PAPR) con…
Linear Precoding Design for OTFS Systems in Time/Frequency Selective Fading Channels
Yao Ge, Lingsheng Meng, David González G. +3
Even orthogonal time frequency space (OTFS) has been shown as a promising modulation scheme for high mobility doubly-selective fading channels, its attainability of full diversity…
Generalized Arlery-Tan-Rabaste-Levenshtein Lower Bounds on Ambiguity Function and Their Asymptotic Achievability
Lingsheng Meng, Yong Liang Guan, Yao Ge +2
This paper presents generalized Arlery-Tan-Rabaste-Levenshtein lower bounds on the maximum aperiodic ambiguity function (AF) magnitude of unimodular sequences under certain delay-D…
Flag Sequence Set Design for Low-Complexity Delay-Doppler Estimation
Lingsheng Meng, Yong Liang Guan, Yao Ge +1
This paper studies Flag sequences for low-complexity delay-Doppler estimation by exploiting their distinctive peak-curtain ambiguity functions (AFs). Unlike the existing Flag seque…