4 papers
Rotatable Antenna-Enhanced Secure Integrated Sensing and Communications Under Imperfect CSI
Qi Yang, Kai Liu, Jingjing Zhao +3
A rotatable antenna (RA)-enhanced secure integrated sensing and communications system is investigated, where an RA-based transceiver simultaneously communicates with legitimate use…
Multiple-Mode Affine Frequency Division Multiplexing with Index Modulation
Guangyao Liu, Tianqi Mao, Yanqun Tang +2
Affine frequency division multiplexing (AFDM), a promising multicarrier technique utilizing chirp signals, has been envisioned as an effective solution for high-mobility communicat…
Pre-Chirp-Domain Index Modulation for Affine Frequency Division Multiplexing
Guangyao Liu, Tianqi Mao, Ruiqi Liu +1
Affine frequency division multiplexing (AFDM), tailored as a novel multicarrier technique utilizing chirp signals for high-mobility communications, exhibits marked advantages compa…
Near-Space Communications: the Last Piece of 6G Space-Air-Ground-Sea Integrated Network Puzzle
Hongshan Liu, Tong Qin, Zhen Gao +16
This article presents a comprehensive study on the emerging near-space communications (NS-COM) within the context of space-air-ground-sea integrated network (SAGSIN). Specifically,…