Cognitive Radio technology for dynamic spectrum access: Spectrum sensing, waveform design and implementation

2010 International Waveform Diversity and Design Conference Pub Date : 2010-09-30 DOI:10.1109/WDD.2010.5592295

V. Chakravarthy, Zhiqiang Wu

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引用次数: 1

Abstract

Spectrum Congestion is a concern to both military and commercial applications. Recent studies have suggested that spectrum congestion is mainly due to the inefficient use of spectrum rather than its unavailability. Dynamic Spectrum Access (DSA) and Cognitive Radio (CR) are two terminologies which are used in the context of improved spectrum efficiency and usage. The advent of CR has created a paradigm shift in wireless communications and instigated a change in FCC policy towards spectrum regulations. Cognitive Radio is a cross-cutting multi disciplinary technology requiring concepts such as: Signal processing, Wireless Communications, Antenna theory, Network protocols, Pattern recognition and Machine learning, to name a few. Even though CR technology's main objective is to identify unused spectrum and improve spectrum efficiency, it indirectly translates to unrealized monetary gain resulting from new applications and users. This has resulted in interest from not only technologists (engineers) but also from policy makers (attorneys) and corporate business.

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动态频谱接入的认知无线电技术:频谱感知、波形设计和实现

频谱拥塞是军事和商业应用都关注的问题。近年来的研究表明，频谱拥塞主要是由于频谱使用效率低下，而不是频谱不可用。动态频谱接入(Dynamic Spectrum Access, DSA)和认知无线电(Cognitive Radio, CR)是在提高频谱效率和利用率的背景下使用的两个术语。CR的出现创造了无线通信的范式转变，并促使FCC对频谱法规的政策发生了变化。认知无线电是一门交叉的多学科技术，需要的概念包括:信号处理、无线通信、天线理论、网络协议、模式识别和机器学习等等。尽管CR技术的主要目标是识别未使用的频谱并提高频谱效率，但它间接转化为新应用和新用户带来的未实现的金钱收益。这不仅引起了技术专家(工程师)的兴趣，也引起了政策制定者(律师)和公司业务的兴趣。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 International Waveform Diversity and Design Conference

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