4, which involves safety issues, train control technology, communication systems, etc.
In terms of challenges, the concerning issues relate to: safety, train control technology, communication systems, platform screen doors, terminal designs and detection and management of emergency situations.
This spacecraft would showcase lunar landing system technology, communication systems and longtime operations.
For example, this technique is exploited in [26] to implement a novel inter-technology communication system, called BusyBee, that defines a modulation scheme and a message-oriented protocol that allows to exchange low-rate control information between WiFi and ZigBee nodes.
The radio technologies for communication systems generally employ a non-overlapping radio frequency (RF) spectrum.
To be sure, the nation is increasingly reliant on technology -- communication systems like cellphones, e-mail and broadcast television, and computer networks that run everything from bond trades to hospitals to the power grid.
Even in such a safety-critical application area as aircraft control, information technology and communication systems are common today [11].
The foundation of the system is an open architecture based in PC technology, standard communication systems and connectivity tools.
Despite the promising role of orthogonal frequency-division multiplexing (OFDM) technology in communication systems, its synchronization in multipath fading channels remains an important and challenging issue.
Critical areas of our economy can be filled by our generation; we're ready to build new technology and communication systems, launch green businesses and create a new preventative health-care system--we just need a little boost.
