Tong-Xing Zheng

TL;DR: This correspondence studies the benefit of NOMA in enhancing energy efficiency for a multiuser downlink transmission and proposes an EE-optimal power allocation strategy that maximizes EE.

TL;DR: In this article, an access threshold-based secrecy mobile association policy was proposed to associate each user with the BS providing the maximum truncated average received signal power beyond a threshold, and the connection probability and secrecy probability of a randomly located user were investigated.

TL;DR: This paper provides a comprehensive secrecy performance analysis and system design/optimization under a stochastic geometry framework, and presents explicit solutions on the optimal transmission parameters, including the wiretap code rates, the on-off transmission threshold and the power allocation ratio.

TL;DR: The AFF scheme is named and it is shown that with this scheme, the eavesdropper will face a noncoherent Ricean fading single-input-multiple-output channel and the closed-form secrecy rate is difficult to obtain, but an exact expression is derived for the single-antenna-eavesdropper case and a lower bound for the multiantenna-Eaves dropper case, both of which can be numerically calculated conveniently.

TL;DR: In this paper, a stochastic geometry framework was proposed to optimize the covert transmission performance of a multi-antenna-aided covert communication with randomly located wardens and interferers, considering both centralized and distributed antenna systems.