منابع مشابه
Spectrum Access and Sharing for Cognitive Radio
Cognitive radio (CR) has emerged as a smart solution to spectrum bottleneck faced by current wireless services, under which licensed spectrum is made available to intelligent and reconfigurable secondary users. CR technology enables these unlicensed secondary users to exploit any spectrum usage opportunity by adapting their transmission parameters on the run. In this chapter, the authors discus...
متن کاملRadio Access and Spectrum A white paper on spectrum sharing
What is spectrum sharing ? The traditional way of handling spectrum for cellular wireless wide area networks is illustrated in Figure 1-a, where two operators own certain parts of the spectrum which is again subdivided into three smaller frequency bands each assigned to one Radio Access Technology (RAT). A trend of more flexible use of spectrum is supported by novel developments in radio techno...
متن کاملSpectrum access policy reasoning for policy-based cognitive radios
Cognitive radio (CR) is one of the key enabling technologies for opportunistic spectrum sharing. In such a spectrum sharing paradigm, radios access spectrum opportunistically by identifying the under-utilized spectrum and then transmitting waveforms in that spectrum that are compliant to relevant spectrum access policies. Implementing such a flexible scheme requires changes in the current stati...
متن کاملDynamic Spectrum Access in Cognitive Radio Networks
Spectrum inefficient utilization and growing in demand of wireless services is one of the challenges facing the wireless communication systems as the spectrum is a finite resource. There is a need of better and smarter exploitation of the limited spectrum which will enables the usage and to allowing sharing of temporally unused spectrum allocated to the television broadcast service in non inter...
متن کاملA Policy Reasoner for Policy-based Dynamic Spectrum Access
Policy-based dynamic spectrum access is one of the spectrum access models being considered by regulators and researchers for regulating the behavior of cognitive radios. This approach to spectrum access decouples the policyrelated components (i.e., policy management, provisioning, and reasoning) from the radio platform. In policy-based spectrum access, the policy reasoner plays a critical role—...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the IEEE
سال: 2012
ISSN: 0018-9219,1558-2256
DOI: 10.1109/jproc.2012.2187132