| 认知无线电技术的研究及发展 |
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| 引用本文： | 毕志明,匡镜明,王华.认知无线电技术的研究及发展[J].电信科学,2006,22(7):57-60. |
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| 作者姓名： | 毕志明 匡镜明 王华 |
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| 作者单位： | 北京理工大学信息科学技术学院现代通信实验室,北京100081 |
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| 摘 要： | 认知无线电技术作为软件无线电技术的一个特殊扩展,受到日益广泛的关注.由于该技术能够自动检测无线电环境,调整传输参数,从空间、时间、频率、调制方式等多维度共享无线频谱,可以大幅度提高频谱利用效率.本文首先从认知无线电技术的定义入手,分别讨论了认知无线电的基本概念、功能与实现、标准化的进程.然后介绍了当前应用状况,最后分析了未来的发展及面临的挑战.
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| 关 键 词： | 认知无线电 软件无线电 频谱管理 宽带无线接入 |
| 收稿时间： | 2006-05-17 |
| 修稿时间： | 2006年5月17日 |
Research Status and Development Trend of Cognitive Radio |
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| Bi Zhiming, Kuang Jingming, Wang Hua.Research Status and Development Trend of Cognitive Radio[J].Telecommunications Science,2006,22(7):57-60. |
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| Authors: | Bi Zhiming Kuang Jingming Wang Hua |
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| Affiliation: | Modem Telecommunication Lab, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081 ,China |
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| Abstract: | Cognitive radio(CR) technology, as a special extent of software radio, is becoming the "next big thing" in wireless communications. CR can sense its operational electromagnetic environment autonomously and adjust its radio operating parameters dynamically. Due to the multi-dimensional reuse of spectrum, CR can significantly improving the spectrum efficiency. This paper discusses the definition of CR, the fundamental concepts, basic functions, system implementation and standardization. It also discusses current application situation and analyses the trends and challenges in the future. |
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| Keywords: | cognitive radio software radio spectrum management broadband wireless access |
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