Themistoklis Charalambous

TL;DR: Two BA Half-Duplex (HD) relay selection algorithms are developed, considering the required transmission rate for each user, for Successive Interference Cancellation at the reception and the Buffer State Information at the relays, and results are provided.

TL;DR: A sufficient condition for delay-independent exponential stability of general linear systems is derived and an explicit expression that bounds the decay rate of the system is presented, demonstrating that the best decay rate that the bound can guarantee can be easily found via convex optimization techniques.

TL;DR: In this article, the authors consider a two-state Gilbert-Elliott Markov chain model and develop optimal sleeping and harvesting policies for radio frequency (RF) energy harvesting devices, formalizing the following intuition: when the ambient RF energy is low, devices consume more energy being awake than what can be harvested and should enter sleep mode; when the RF energy was high, on the other hand, it is essential to wake up and harvest.

TL;DR: This paper provides a set of easily verifiable necessary and sufficient conditions for delay-independent stability of positive linear systems subject to a general class of heterogeneous time-varying delays and demonstrates that the best bound on the decay rate can be found via convex optimization.

TL;DR: In this paper, the authors considered a set of agents which may receive an observation of their state by a central observation post via a shared wireless network, and designed a scheduling mechanism for the central observer post to decide how to allocate the available communication resources.