Chengshan Xiao

TL;DR: This paper provides a latest survey of the physical layer security research on various promising 5G technologies, includingPhysical layer security coding, massive multiple-input multiple-output, millimeter wave communications, heterogeneous networks, non-orthogonal multiple access, full duplex technology, and so on.

TL;DR: In this paper, new sum-of-sinusoids statistical simulation models are proposed for Rayleigh fading channels. And the autocorrelations and cross correlations of the quadrature components, and the auto-correlation of the complex envelope of the new simulators match the desired ones exactly, even if the number of sinusoids is as small as a single-digit integer.

TL;DR: An improved sum-of-sinusoids simulation model is proposed for Rayleigh fading channels, which employs random initial phase, and conditional random Doppler frequency for all individual sinusoids.

TL;DR: This work develops asymptotically necessary and sufficient conditions for optimal downlink transmission that require only statistical channel state information at the transmitter and proposes a beam division multiple access (BDMA) transmission scheme that simultaneously serves multiple users via different beams.

TL;DR: This paper considers a time-division duplex system where uplink training is required and an active eavesdropper can attack the training phase to cause pilot contamination at the transmitter, and derives an asymptotic achievable secrecy rate when the number of transmit antennas approaches infinity.