Simulation plays an important role in the verification ofmobilewireless networking protocols.Recently, several cities have either begun deploying or are completing plans to deploy large-scale urban mesh networks (LUMNets). On the other hand, the networking research community has little expertise in simulating such networks. While the protocols are simulated reasonably realistically, the propaga...

Simulation plays an important role in the verification of mobile wireless networking protocols. Recently several cities have either begun deploying or are completing plans to deploy large-scale urban mesh networks (LUMNets). On the other hand, the networking research community has little expertise in simulating such networks. While the protocols are simulated reasonably realistically, the propa...

Sea clutter is the backscattered returns from a patch of the sea surface illuminated by a radar pulse. The amplitude waveforms of sea clutter and indoor radio propagation are very complicated. Can the apparent randomness of these waveforms be attributed to be generated by low-dimensional chaos? Based on the assumption that a chaotic attractor is characterized by a noninteger fractal dimension a...

Impulse radio, a form of ultra-wide band signaling, has properties that make it a viable candidate for short range communications in dense multipath environments. This paper describes the characteristics of impulse radio, gives analytical estimates of its multiple access capability, and presents propagation test results and their implications for the design of the radio receiver.

Worldwide Interoperability for Microwave Access (WiMAX) and other broadband wireless technologies are associated with a variety of frequency spectrums. It is essential to identify optimal frequency spectrum for implementing a technologically sturdy and strong WiMAX network. This paper compares different frequency spectrums centering various parameters like path loss, interference factors, cover...

Satellites offer a promising alternative for mobile access to the Internet by both pedestrians, and more importantly, from vehicles. As such, satellites provide an essential complement to the cellular radio (UMTS) infrastructure in sparsely populated areas where high bandwidth UMTS cells cannot be economically deployed. In this paper, we analyse various mobile Internet applications in represent...

This paper attempts to analyze the propagation characteristics of radio signal inside a partially open drain environment using an empirical approach. The proposed research topic concerns a unique situation in several Asian countries because the drainage systems in these countries differ notably from those in the US and Europe in that the former are partially open on the top while the latter are...

Mobile network operators demand small base station antennas and high physical layer throughputs. In the downlink, high physical layer throughputs can be achieved by exploiting transmit diversity. Given that the correlation between different propagation paths reduces the achievable throughput, it is commonly conjectured that the greater the transmit antenna spacing, the better the radio link per...

Investigations of propagation into and within buildings at 900, 1800, and 2300 MHz have been undertaken, using buildings both in the University of Liverpool precinct and in the commercial center of the city of Liverpool, United Kingdom. The emphasis of this article is the modeling of radio transmission into buildings that uses the measured penetration loss values in order to adjust the propagat...

In the last few years Wireless Vehicular networks have been in the limelight for their potential in many human applications such Road Safety, Info-Mobility, Infotainment, Environmental Monitoring, etc. The research community responded to the new emerging needs designing a number of applications, algorithms, and protocols to cope with the vehicular environment. Differently from tactical ad hoc n...