Dynamic Spectrum Access with Cognitive Radios: Future Architectures and Research Challenges

M. Nekovee
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引用次数: 17

Abstract

New trends and developments in radio technology together with current developments towards liberalization of spectrum management regulations are opening the opportunity to exploit the new paradigm of dynamic spectrum access (DSA). The key characteristic of DSA systems is their ability exploit knowledge of their electromagnetic environment to adapt their operation and access to spectrum. Their key promise is that they open the possibility of highly efficient (re)use of spectrum. The cognitive radio, built on software defined radio, is the intelligent, adaptive and frequency agile wireless device that will underlie most forms of DSA. In this paper we review proposed architectures for future DSA systems and describe some of the key research challenges associated with this new paradigm. Particular emphasize is given to autonomous cognitive radio DSA
认知无线电的动态频谱接入:未来架构和研究挑战
无线电技术的新趋势和发展,以及频谱管理法规自由化的当前发展,为利用动态频谱接入(DSA)的新范例提供了机会。DSA系统的关键特征是能够利用电磁环境知识来适应其操作和频谱访问。他们的关键承诺是,他们开启了高效(再)利用频谱的可能性。基于软件定义无线电的认知无线电是一种智能、自适应和频率灵活的无线设备,将成为大多数DSA的基础。在本文中,我们回顾了未来DSA系统的建议架构,并描述了与这种新范式相关的一些关键研究挑战。特别强调了自主认知无线电DSA
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