Spectrum Load Balancing for Medium Access in Cognitive Radio Systems
نویسندگان
چکیده
منابع مشابه
An overview of medium access control strategies for opportunistic spectrum access in cognitive radio networks
Cognitive radio (CR) is a promising wireless technology that provides efficient spectral usage. Medium Access Control (MAC) has an important role in several cognitive radio functions such as sensing, spectrum mobility, resource allocation and spectrum sharing. We focus on the opportunistic spectrum access (OSA) functionality of the CR network MAC layer by which the secondary users (SUs) access ...
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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...
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Cognitive radio (CR) is seen as one of the enabling technologies for realizing a new regulatory spectrum management paradigm, viz. opportunistic spectrum sharing (OSS). In the OSS paradigm, unlicensed users (a.k.a. secondary users) opportunistically operate in fallow licensed spectrum on a non-interference basis to licensed users (a.k.a. incumbent or primary users). Incumbent users have absolut...
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Cognitive radio (Mitola III, 2000) also known as opportunistic spectrum access (OSA) has emerged as a promising solution to increase the spectrum efficiency Haykin (2005). In OSA, the SU finds spectrum holes (white space) by sensing the radio frequency spectrum. The presence of spectrum holes in the PU channels are highlighted in Fig. 1. These spectrum holes are used by the SU for its transmiss...
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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...
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ژورنال
عنوان ژورنال: IEEE Communications Letters
سال: 2008
ISSN: 1089-7798
DOI: 10.1109/lcomm.2008.071968