| 基于频谱感知的认知无线网络容量研究 |
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| 引用本文： | 谢先斌,李新山. 基于频谱感知的认知无线网络容量研究[J]. 电子测量与仪器学报, 2010, 24(1): 61-65. DOI: 10.3724/SP.J.1187.2010.00061 |
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| 作者姓名： | 谢先斌 李新山 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室,成都,611731;电子科技大学通信抗干扰技术国家级重点实验室,成都,611731 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(编号:2009CB320405)资助项目 |
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| 摘 要： | 动态频谱分配是认知无线电网络实现的关键所在,要实现动态频谱分配就必须快速准确的感知主用户的工作状况,感知时间的长短直接影响到认知无线网络的容量和对主用户的干扰程度,在主用户保护模式(PUP)和固定认知用户频谱利用率模式(CUS)下对认知无线网络容量与感知时间的关系进行了研究,仿真结果显示设计感知时间是非常重要的,同时,当感知时间超过单位时帧长度的5%后协同更多的认知用户与不协同对认知网络容量影响区别不大。
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| 关 键 词： | 认知无线电 频谱感知 容量 最优化 |
Research of cognitive radio networks capacity on spectrum sensing |
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| Xie Xianbin,Li Xinshan. Research of cognitive radio networks capacity on spectrum sensing[J]. Journal of Electronic Measurement and Instrument, 2010, 24(1): 61-65. DOI: 10.3724/SP.J.1187.2010.00061 |
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| Authors: | Xie Xianbin Li Xinshan |
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| Affiliation: | National key laboratory of science and technology on communications;UESTC;Chengdu 611731;China |
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| Abstract: | The dynamic spectrum allocation solutions such as cognitive radio networks have been proposed as a key technology to exploit the frequency segments that are spectrally underutilized. Cognitive radio users work as secondary users who need to constantly and rapidly sense the presence of primary users or licensees to utilize their frequency bands if they are inactive. Short sensing cycles should be run by the secondary users to achieve higher throughput rates as well as to provide low level of interference to ... |
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| Keywords: | cognitive radio spectrum sensing capacity optimization |
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