This letter investigates the reconfigurable intelligent surface (RIS)-assisted multiple-input single-output (MISO) wireless system, where both half-duplex (HD) and full-duplex (FD) operating modes are considered together, for first time in literature. The goal is to maximize rate by optimizing RIS phase shifts. A novel deep reinforcement learning (DRL) algorithm proposed solve formulated non-co...

As one of the promising approaches to increase the network capacity, Full-duplex (FD) communications have recently gained a remarkable attention. FD communication enables wireless nodes to simultaneously send and receive data through the same frequency band. Thanks to the recent achievements in the self-interference (SI) cancellation, this type of communication is expected to be potentially uti...

In this paper using strongly duplexes we introduce a new class of (semi)hypergroups. The associated (semi)hypergroup from a strongly duplex is called duplex (semi)hypergroup. Two computer programs written in MATLAB show that the two groups $Z_{2n}$ and $Z_{n}times Z_{2}$ produce a strongly duplex and its associated hypergroup is a complementary feasible hypergroup.

In this work, we propose a novel hybrid communication network that utilizes both Full-Duplex (FD) Decode-and-Forward (DF) relay and an Intelligent Reflecting Surface (IRS) to support data transmission over wireless channels. We design the reflecting coefficients at IRS maximize minimum achievable rate of two hops for proposed network. To end, utilize change-of-variables with Semi-Definite Relax...

We study interacting components and their compatibility with respect to synchronous and asynchronous composition. The behavior of components is formalized by I/O-transition systems. Synchronous composition is based on simultaneous execution of shared output and input actions of two components while asynchronous composition uses unbounded FIFO-buffers for message transfer. In both contexts we st...

A family of computation-efficient parallel prefix algorithms for message-passing multicomputers are presented. The family generalizes a previous algorithm that uses only half-duplex communications, and thus can improve the running time. Several properties of the family are derived, including the number of computation steps, the number of communication steps, and the condition for effective use ...

We consider the analysis of innnite half-duplex systems which consists of nite state machines that communicate over unbounded channels. The property half-duplex for two machines and two channels (one in each direction) says that each reachable state has at least one channel empty. The contributions of this paper are (a) to give a nite description of the reachability set of such systems , which ...

This chapter summarizes theoretically achievable gains and the construction of practical codes for user-cooperation. Most of these results relate to the relay channel, which is a three-terminal channel that captures the essence of usercooperation and serves as one of the primary building blocks for cooperation on a larger scale. In investigating the fundamental limits of relaying, we present in...