In the past, credit-card traffickers did business in private chat rooms on the Internet Relay Chat, a communication network, and now they also use the World Wide Web, where it is easy to start and shut down sites to avoid detection.
In such study, it was found that the use of relays to assist a communication with the objective of increasing its capacity is only effective in high path-loss scenarios, because of the half-duplex constraint of RA schemes.
A relay communication system, in which the relay forwards the signal transmitted from a source node to a destination node, has attracted a lot of attention, due to its ability in expanding the coverage, increasing the capacity, and reducing the power consumption.
In this paper, it is demonstrated that entire spectrum of fault resistances can be covered by using the proposed local measurement based directional ROCOV relay in parallel with a communication assisted two-end ROCOV relay.
2001 Mars Odyssey, U.S. spacecraft that studied Mars from orbit and served as a communication relay for the Mars Exploration Rovers and Phoenix.
If Maven does not launch this year, the next chance would be in 2016, and a less favorable configuration of orbits means that it would have to expend more fuel to get to Mars, diminishing its worth as a communication relay.
Within a couple of days, however, top NASA officials decided that Maven's launching fell into the category of "essential," not because of an urgent need to study the Martian atmosphere but because Maven is also to serve as a communication relay for the Curiosity and Opportunity rovers on Mars.
The nervous system in general serves as a communication relay, monitoring and coordinating internal organ function and responds to changes in the external environment.
Although many of the model-based approaches have very promising results, they often use the UABSs as a communication relay node, rather than providing directly service to the end user [5 7].
It would travel with the orbiter, which would also function as a communication relay to Earth.
