Spectrum Sensing for Cognitive Radio
نویسندگان
چکیده
منابع مشابه
Spectrum Sensing in Cognitive Radio
In modern wireless communications the spectrum is allocated to fixed licensed users and on the other side the number of wireless devices are increasing rapidly, that has lead to spectrum crunch. As the spectrum is precious it has to be utilized efficiently. The solution to mitigate this problem is Spectrum Sharing. One of the innovative approach to recognize and access the spectrum holes presen...
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With the fast readying of latest wireless devices , the last decade has witnessed a growing demand for spectrum. However, the exploit spectrum assignment policy becomes a bottleneck for additional economical spectrum utilization, below that an excellent portion of the authorised spectrum is severely under-utilized. The inefficient usage of the restricted spectrum resources urges the spectrum re...
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In this thesis, first, we address the problem of energy efficiency for spectrum sensing. We propose a combined censoring and ”on/off” scheme as an energy efficient technique for cognitive radio networks. We maximize the lifetime of the spectrum sensing system by minimizing the energy consumption of the system subject to a specific detection performance constraint. We show that our proposed tech...
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In this chapter, we present the state of the art of the spectrum sensing techniques for cognitive radio networks as well and their comparisons. The rest of the chapter is organized as below: Section I.1, Section I.2, and Section I.3 present the spectrum management problem and the cognitive radio cycle as well as the compressive sensing solution; Section II.1 describes the spectrum sensing model...
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ژورنال
عنوان ژورنال: Proceedings of the IEEE
سال: 2009
ISSN: 0018-9219,1558-2256
DOI: 10.1109/jproc.2009.2015711