The secure exchange of messages between different communication devices is a major
issue of Internet-of-Things (IoT) applications in future smart cities. Current security …

In this letter, we propose an efficient structured approximate message passing (Str-AMP)
detector for multi-user spatial modulation systems. Str-AMP consists of two steps in each …

Sparse code multiple access (SCMA) is a promising code-based non-orthogonal multiple-
access technique that can provide improved spectral efficiency and massive connectivity …

We consider the physical layer security (PLS) problem in multi-user non-orthogonal multiple
access (NOMA) enabled multiple-input multiple-output (MIMO) visible light communication …

Due to the problem of inter-channel interference, the average bit error probability (ABEP)
performance of the traditional multiple transmit and multiple receive antenna systems …

Sparse code multiple access (SCMA) is a promising candidate air interface of the next
generation mobile networks. However, the decoding complexity of current message passing …

This paper studies physical layer security in a wireless ad hoc network with numerous
legitimate transmitter-receiver pairs and eavesdroppers. A hybrid full-duplex (FD)/half …

Three-dimensional (3-D) massive multiple-input-and-multiple-output (MIMO) systems, which
explore degrees of freedom in both the vertical and the horizontal dimensions, are a …

As a code-domain non-orthogonal multiple access technique, sparse code multiple access
(SCMA) is considered as a promising technique for future wireless Internet of Things (IoT) …

To address key challenges for beyond 5G wireless technologies in a simultaneous manner,
we propose an orbital angular momentum (OAM)-based, secure, energy-efficient …