منابع مشابه
A Survey on Dynamic Spectrum Access Techniques in Cognitive Radio
Wireless networks are characterized by fixed spectrum policy. With increasing demands for wireless communication efficiently using the spectrum resources has become an essential issue. Cognitive radio is a form of wireless communication which is used to sense the spectrum and find the free spectrum. It is used by unlicensed users without causing interference to the licensed user. Cognitive radi...
متن کاملDynamic Spectrum Access Techniques in Cognitive Radio Networks: A Survey
In today’s scenario the introduction of new wireless applications and services and its increasing demand is creating issues in the allocation of the available radio spectrum which is limited and precious resource. As spectrum utilization depends strongly on time and place, a fixed spectrum assignment leads to under utilization of spectrum. Cognitive radio is a new technology which provides a dy...
متن کاملA Survey on Dynamic Spectrum Access Techniques for Cognitive Radio
Cognitive radio (CR) is a new paradigm that utilizes the available spectrum band. The key characteristic of CR system is to sense the electromagnetic environment to adapt their operation and dynamically vary its radio operating parameters. The technique of dynamically accessing the unused spectrum band is known as Dynamic Spectrum Access (DSA). The dynamic spectrum access technology helps to mi...
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 کاملDynamic Spectrum Access in Cognitive Radio Wireless Sensor Networks Using Different Spectrum Sensing Techniques
Cognitive Radio Wireless Sensor Networks are emerging technology which provides cognitive capabilities to Wireless Sensor Networks. WSN operates in unlicensed band. Same spectrum band is shared by other wireless devices like Wi-Fi and Bluetooth. Due to this, the unlicensed spectrum is overcrowded which degrades the performance of WSNs. To overcome this issue, Cognitive Radio is integrated with ...
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: Wireless Personal Communications
سال: 2008
ISSN: 0929-6212,1572-834X
DOI: 10.1007/s11277-008-9473-6