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Robust and Secure Wireless Communications via Intelligent Reflecting Surfaces
Xianghao Yu, Dongfang Xu, Ying Sun +2
In this paper, intelligent reflecting surfaces (IRSs) are employed to enhance the physical layer security in a challenging radio environment. In particular, a multi-antenna access…
Joint User Association and Resource Allocation in the Uplink of Heterogeneous Networks
Ata Khalili, Soroush Akhlaghi, Hina Tabassum +1
This letter considers the problem of joint user association (UA), sub-channel assignment, antenna selection (AS), and power control in the uplink (UL) of a heterogeneous network su…
A Simple Variational Bayes Detector for Orthogonal Time Frequency Space (OTFS) Modulation
Weijie Yuan, Zhiqiang Wei, Jinhong Yuan +1
The emerging orthogonal time frequency space (OTFS) modulation technique has shown its superiority to the current orthogonal frequency division multiplexing (OFDM) scheme, in terms…
Secure Communication for Spatially Sparse Millimeter-Wave Massive MIMO Channels via Hybrid Precoding
Jindan Xu, Wei Xu, Derrick Wing Kwan Ng +1
In this paper, we investigate secure communication over sparse millimeter-wave (mm-Wave) massive multiple-input multiple-output (MIMO) channels by exploiting the spatial sparsity o…
Prospective Multiple Antenna Technologies for Beyond 5G
Jiayi Zhang, Emil Björnson, Michail Matthaiou +3
Multiple antenna technologies have attracted large research interest for several decades and have gradually made their way into mainstream communication systems. Two main benefits…
Physical Layer Security in UAV Systems: Challenges and Opportunities
Xiaofang Sun, Derrick Wing Kwan Ng, Zhiguo Ding +2
Unmanned aerial vehicle (UAV) wireless communications have experienced an upsurge of interest in both military and civilian applications, due to its high mobility, low cost, on-dem…