Accès ouvert
2026
preprint
OpenAlex
Wanchen Hu, Jie Yang, Yi Song, Jun Xia et autres
This paper proposes an environment-aware diffusion based channel estimation in massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. The high dimensionality of massive MIMO channels combined with limited pilot resources makes accurate estimation challenging. To address this issue, we exploit the …
Accès ouvert
2026
preprint
OpenAlex
Jialin Wu, Fan Liu, Ying Zhang, Yifeng Xiong et autres
Practical orthogonal frequency division multiplexing (OFDM) communication frames contain both deterministic pilots and random data payloads, motivating the joint ambiguity function (AF) analysis of the two components when the entire frame is reused for integrated sensing and communication (ISAC). This paper characterizes …
Accès ouvert
2026
preprint
OpenAlex
Jie Yang, Yingdong Pi, Qiyan Luo, Xiaoyu Wang et autres
A Digital Surface Model (DSM) is a fundamental geospatial data product for representing the elevation of the Earth's surface. Recently, 3D Gaussian Splatting (3DGS) has shown considerable potential for DSM reconstruction from multi-view optical satellite imagery due to its explicit scene representation …