In a K-pair-user two-way interference channel (TWIC), 2K messages and 2K transmitters/receivers form a K-user IC in the forward direction (K messages) and another K-user IC in the backward direction which operate in full-duplex mode. All nodes may interact, or adapt inputs to past received signals. We derive a new outer bound to demonstrate that the optimal degrees of freedom (DoF, also known a...

In this paper, the auto-tuning of decentralized PID controllers for MIMO processes using different relay feedback experiments is studied. These methods consist in identifying the ultimate point of the process, using relay feedback and applying Ziegler-Nichols-like formulae in order to tune the controllers. A benchmark illustrates the benefits and drawbacks of each approach.

In this paper we study the multiple-input multiple-output two-way relay channel (MIMO-TWRC) when the nodes use analog beamforming. Following the amplify-and-forward (AF) strategy, the problem consists of finding the transmit and receive beamformers of the nodes and the relay, and the power allocated to each one, that achieve the boundary of the capacity region. We express the optimal node beamf...

This article considers the cooperation between base station and relay stations to increase system throughput in time-slotted relaying wireless networks, such as dynamic time division multiple access systems. We focus on optimal throughput scheduling policies for the cooperative relaying at the network layer level. It is shown that the resulting policy for this cooperative protocol obtains the o...

In this paper, we investigate the secrecy performance of nonorthogonal multiple access (NOMA) system in an untrusted relaying energy harvesting (UEH) network with multiple-input multiple-output (MIMO) architecture using maximum ratio transmission (MRT) and maximal combining (MRC) techniques. network, a source communicates users help composed components amplify-and-forward (AF) protocol. These r...

We investigate the role of a relay in multiple access channels (MACs) with bursty user traffic, where intermittent data traffic restricts the users to bursty transmissions. As our main result, we characterize the degrees of freedom (DoF) region of a K-user bursty multi-input multi-output (MIMO) Gaussian MAC with a relay, where Bernoulli random states are introduced to govern bursty user transmi...

In this paper, we study the multiple-input–multipleoutput two-way relay channel (MIMO-TWRC) when the nodes and relay use analog beamforming. Following the amplify-andforward (AF) strategy, the problem consists of finding the transmit and receive beamformers of the nodes and relay (as well as the power allocated to each one) that achieve the boundary of the optimal rate region. To solve it, we f...