13 citations · 29 across the 25 of their papers we have counts for
11 papers · 1 filter
Ambiguity Function Analysis of OFDM Signals With Pilots and Data Payloads
Jialin Wu, Fan Liu, Ying Zhang +4
Practical orthogonal frequency division multiplexing (OFDM) communication frames contain both deterministic pilots and random data payloads, motivating the joint ambiguity function…
Exact Degrees of Freedom of Spatially Sparse MIMO Channels Without Prior CSI
Yifeng Xiong, Weijiang Zhao, Fan Liu +2
We characterize the degree of freedom (DoF) of a point-to-point blockwise memoryless channel without prior channel state information (CSI), with a fixed number of propagation p…
Relativistic Cramér-Rao Bound Scaling for Device-Based and Device-Free Sensing
Fan Liu, Yifeng Xiong, Weijie Yuan +3
This letter investigates range and velocity estimation under relativistic motion for device-based (DB) and device-free (DF) sensing. By deriving the exact time-scaling and time-shi…
SNR-Dependent Mismatched Filtering for Bistatic OFDM Ranging
Ying Zhang, Fan Liu, Yifeng Xiong +3
This paper investigates the ranging performance of a bistatic integrated sensing and communications (ISAC) system employing orthogonal frequency-division multiplexing (OFDM), in wh…
Ambiguity Function Analysis of Pilot-Embedded Random OFDM Signals
Jialin Wu, Fan Liu, Ying Zhang +3
This paper investigates the statistical ambiguity functions (AFs) of orthogonal frequency division multiplexing (OFDM) waveforms that incorporate deterministic unit-modulus pilot s…
Auto-correlation Function Keying
Weijiang Zhao, Yifeng Xiong, Fan Liu +3
We propose ACFK: Auto-correlation Function Keying, a new integrated sensing and communication (ISAC) waveform that carries random communication data while directly controlling the…
How Much Sensing Information Is Needed to Control an Unstable Linear System?
Ming Li, Fan Liu, Yifeng Xiong +4
Modern control systems increasingly rely on sensing to infer the system state before control actions can be taken. Yet a given observation mechanism may fail to preserve sufficient…
CP-OFDM Achieves Lower Ranging CRB Than Frequency-Spread Waveforms in the Large-Sample Regime
Fan Liu, Yifeng Xiong, Ya-Feng Liu +3
The inherent randomness of communication symbols creates a fundamental tension in Integrated Sensing and Communications (ISAC). On the one hand, they enable data transmission while…
Input Distribution Design for Ranging-Oriented OFDM-ISAC Systems Under Frequency-Selective Fading
Weijiang Zhao, Yifeng Xiong
The implementation of the \ac{isac} feature in \ac{6g} networks is most likely to be based on the framework of \ac{ofdm}. Input distribution design, or constellation design, is a c…
Transmission Mask Analysis for Range-Doppler Sensing in Half-Duplex ISAC
Dikai Liu, Yifeng Xiong, Marco Lops +2
In this paper, we analyze the periodic transmission masks for MASked Modulation (MASM) in half-duplex integrated sensing and communication (ISAC), and derive their closed-form expe…
Sensing-Limited Control of Noiseless Linear Systems Under Nonlinear Observations
Ming Li, Fan Liu, Yifeng Xiong +2
This paper investigates the fundamental information-theoretic limits for the control and sensing of noiseless linear dynamical systems subject to a broad class of nonlinear observa…