Cognitive Radio Concept and Challenges in Dynamic Spectrum Access for the Future Generation Wireless Communication Systems

被引：15
|
作者：
Kumar, Sanjay [1 ]
Sahay, Janardan [1 ]
Mishra, Gajendra Kant [1 ]
Kumar, Sanjeet [1 ]
机构：
[1] Birla Inst Technol, Ranchi, Bihar, India
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2011年 / 59卷 / 03期
关键词：
Cognitive Radio; Dynamic spectrum usage; Spectrum sensing; Spectrum management challenges;
D O I：
10.1007/s11277-011-0243-5
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Recently, the Dynamic Spectrum Access (DSA) techniques are proposed to solve the problem of spectrum scarcity and help to use the limited spectrum resource as effectively as possible. The current ongoing spectrum reform opens up the possibilities to exploit the DSA techniques. This paper aims to provide a critical review on the various ongoing efforts towards the use of DSA concept for the frequency management of future wireless communications systems, especially from the Cognitive Radio (CR) perspective. The CR aims for an efficient and dynamic access to the spectrum, and provides a new method of spectrum management. This paper also highlights the various challenges associated with CR in order to realize the concept of DSA.
引用
收藏
页码：525 / 535
页数：11
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