4 papers
Channel Estimation for OFDM via Delay-Doppler Refinement
Mingcheng Nie, Hao Chang, Xiaoqi Zhang +4
In this paper, we propose a novel channel estimation (CE) algorithm for orthogonal frequency division multiplexing (OFDM) systems that exploits the unique characteristics of the de…
Integrating Sensing into Covert Communications: Opportunities and Challenges
Jun Wu, Xiaoqi Zhang, Haoyuan Pan +3
Covert communications aim to hide the existence of wireless transmissions from unauthorized adversaries. However, conventional designs based on blind interference or passive uncert…
Semantic Sensing: Toward a Task-Oriented Paradigm
Xiaoqi Zhang, J. Andrew Zhang, Chang Liu +3
Sensing and communication are fundamental enablers of next-generation networks. While communication technologies have advanced significantly, sensing remains limited to conventiona…
Deep Learning-based OTFS Channel Estimation and Symbol Detection with Plug-and-Play Framework
Xiaoqi Zhang, Zhitong Ni, Weijie Yuan +2
Orthogonal Time Frequency Space (OTFS) modulation has recently attracted significant interest due to its potential for enabling reliable communication in high-mobility environments…