People’s ideas about communications have changed completely, nowadays when this subject is mentioned almost everyone thinks of wireless communications. The demand for broadband wireless communications offering greater and greater data rates is endless, and the radio-technology community is trying harder and harder to satisfy this demand. Recently, there was the worldwide launch of 4th generatio...

Wireless communication is an essential component of public safety operations [1,2]. First responders have benefited from many technical advances in the wireless arena in recent years including new modes for voice and data communications, cellular and satellite communications, and wireless local area networks (WLAN). At the same time, this profusion of new technology has aggravated a looming cri...

UWB technology is advancing rapidly because of its potential to have high data rates and very low radiation power. In recent years UWB technology has been used in the areas of, sensing, radar and military communications [1]. In February 2002, the Federal Communications Commission (FCC) of the United States issued a report that UWB could be used for wireless data Communications [2]. Since then, ...

E ver since the advent of the concept of the smart grid, public utilities, businesses, consumers, the U.S. and other governments worldwide, as well as equipment and IC chip manufacturers have been eager to cash in on and tap into energy savings and new market opportunities through higher energy efficiency usage levels. One of the hottest areas in automating the smart grid is in residential and ...

Ultra-wideband (UWB) communication techniques have attracted a great interest in both academia and industry in the past few years for applications in short-range wireless mobile systems. This is due to the potential advantages of UWB transmissions such as low power, high rate, immunity to multipath propagation, less complex transceiver hardware, and low interference. However, tremendous R&D eff...

High-speed railway (HSR) communications will become a key feature supported by intelligent transportation communication systems. The increasing demand for HSR communications leads to significant attention on the study of radio resource management (RRM), which enables efficient resource utilization and improved system performance. RRM design is a challenging problem due to heterogenous quality o...

Device-centric wireless networks, including Deviceto-Device communications and Multi-hop Cellular Networks, are expected to perform a pivotal role in the design of future 5G wireless networks. In addition, opportunistic schemes have shown to have the potential to enhance the efficiency of devicecentric wireless networks by intelligently exploiting contextand content-awareness. In this context, ...

Private wireless communications networks utilized by emergency services agencies are vital components of the nation's critical infrastructure. Reliable communications are essential for our nation's "first responders," and successful attacks on these networks could interrupt mission critical operations, compromise restricted information, and contribute indirectly to loss of lives. While the thre...

Wireless communications system using stratospheric platform becomes the focus of world’s attention, since it would have lots of advantages over the conventional wireless communication infrastructure such as terrestrial and satellite communications systems. The research and development for putting the system to practical use is ongoing in some countries. This paper describes the results and the ...