Robust connectivity in time-frequency dual fading channels for the 6G satellite IoT: chirp and FRFT. - Wenliang Lin; Xinghao Cao; Ke Wang 013; Zhongliang Deng; Yishan He; Kejia Cui; Yaohua Deng; Da Wan; Zhiwei He (Digit. Commun. Networks, 2026)