Sökning: "opportunistic communication"
Visar resultat 16 - 20 av 30 avhandlingar innehållade orden opportunistic communication.
16. Dude, Where's My Car? Cellular Navigation for Autonomous Driving
Sammanfattning : Position and direction estimation is useful for numerous engineering applications for commercial, scientific, and military purposes. Technology that fuses observations of signals broadcast by Global Navigational Satellite Systems (GNSS) with inertial measurements is standard for electronic devices, but this requires at least a periodically unobstructed view of the sky to perform reliably. LÄS MER
17. Spectrum Sensing Algorithms Based on Second-Order Statistics
Sammanfattning : Cognitive radio is a new concept of reusing spectrum in an opportunistic manner. Cognitive radio is motivated by recent measurements of spectrum utilization, showing unused resources in frequency, time and space. Introducing cognitive radios in a primary network inevitably creates increased interference to the primary users. LÄS MER
18. Exploring Opportunistic Use of Mobile Devices for Studying in Higher Education
Sammanfattning : Students today often feel that they have too much to do and too little time. A common strategy to remedy this is to take advantage of opportunities to use “inter-time”, the time between other activities such as waiting or traveling. LÄS MER
19. Challenged Networking : An Experimental Study of new Protocols and Architectures
Sammanfattning : With the growth of Internet, the underlying protocols are increasingly challenged by new technologies and applications. The original Internet protocols were, however, not designed for wireless communication, mobility, long disconnection times, and varying bandwidths. LÄS MER
20. On Spectrum Sensing for Secondary Operation in Licensed Spectrum : Blind Sensing, Sensing Optimization and Traffic Modeling
Sammanfattning : There has been a recent explosive growth in mobile data consumption. This, in turn, imposes many challenges for mobile services providers and regulators in many aspects. One of these primary challenges is maintaining the radio spectrum to handle the current and upcoming expansion in mobile data traffic. LÄS MER