Recently, the mobile community has focused on techniques for reducing energy consumption for mobile hosts. These power management techniques typically target communication devices such as wireless network interfaces, aiming to reduce usage, and thus energy consumption , of the particular device itself. We observe that optimization of a single device's energy consumption, without considering the...

According to Sannikov and Skrzypacz (2007), collusion breaks down in public Nash equilibrium. Here, though, firms collude in public communication equilibrium as long as equation (5) in the paper holds. If it fails, this agreement falls apart for the same reason as in Sannikov and Skrzypacz’s result: obedient firms cannot be identified, so discouraging overproduction requires punishing everyone ...

A communication channel is a physical system that transfers information from one place to another. Examples of communication channels include wires, optical fibers, and chains of spins that propagate spin waves through a medium. This Letter shows that the power-limited communication capacity of a multimode optical fiber or a set of parallel spin chains can be enhanced by introducing nonlinear c...

Energy efficiency is a measure of performance in wireless networks. Therefore, controlling the transmitter power at a given node increases not only the operating life of the battery but also the overall system capacity by successfully admitting new links between a source and a destination. It is essential to find effective means of power control of point-to-point, broadcasting and multicasting ...

This paper presents the design of a power line communication model. Primarily, it is focused on a realization of a communication model with a power line channel. The model is composed of a PLC communication model, a model of power lines and a noise model. Power lines are modelled through a chain parameter describing the relation between the input and output voltage and current of the two-port n...

Crisis communication during power outages poses several challenges. Frist, the causes of power outages are often events such as severe weather, which also lead to complications. Second, power outages themselves lead to limitations in everyday life. Third, communication infrastructures, that are necessary for crisis communication, are often affected. This work focuses on the communication of the...

Modern distributed systems often rely on so called weakly-consistent databases, which achieve scalability by sacrificing the consistency guarantee of distributed transaction processing. Such databases have been formalised in two different styles, one based on abstract executions and the other based on dependency graphs. The choice between these styles has been made according to intended applica...

In this work, we introduce an approach for minimizing the total power consumption of a mobile transmitter due to source compression, channel coding and transmission subject to a fixed end-to-end source distortion. We illustrate our approach both on an abstract class of sources and channels and on a realistic H.263 video transmission system through a wireless channel. Performance under different...