| 基于主动频谱感知接入的认知无线电台研究 |
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| 引用本文： | 郑仕链,;杨小牛,;何斌,;杨伟程,;陈永其.基于主动频谱感知接入的认知无线电台研究[J].电子科学技术评论,2014(6):563-570. |
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| 作者姓名： | 郑仕链 ;杨小牛 ;何斌 ;杨伟程 ;陈永其 |
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| 作者单位： | [1]通信信息控制和安全技术重点实验室,浙江嘉兴314033; [2]西安电子科技大学通信工程学院,西安710071; [3]中国电子科技集团公司第三十六研究所,浙江嘉兴314033 |
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| 摘 要： | 讨论了所研制的工作于30-512 MHz的基于主动频谱感知接入的认知无线电台。该电台实现了认知无线电动态频谱接入最为关键的几大功能：频谱感知、频谱会合、频谱监视,以及频谱切换。试验结果表明,该电台具备在不依赖于公共控制信道的情况下自动寻找空闲信道建立链路的能力,也具备在当前通信信道上出现主用户信号或其他干扰信号时自动切换到其他空闲信道上继续通信的能力,为认知无线电技术的实用化提供了很好的借鉴。
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| 关 键 词： | 认知无线电 动态频谱接入 频谱感知 会合 频谱切换 |
Cognitive Radio Testbed Based on Active Spectrum Sensing and Access |
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| Affiliation: | ZHENG Shi-lian, YANG Xiao-niu, HE Bin, YANG Wei-cheng, CHEN Yong-qi(1 Science and Technology on Communication Information Security Control Laboratory, Zhejiang Jiaxing 314033, China; 2. School of Telecommunications Engineering, Xidian University, Xi＇an 710071, China; 3. The 36th Research Institute of CETC, Zhejiang Jiaxing 314033, China) |
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| Abstract: | A cognitive radio testbed for dynamic spectrum access is discussed,which works in the frequency range spanning from 30 MHz to 512 MHz. It realizes several key technologies of dynamic spectrum access including spectrum sensing,rendezvous,inband sensing and spectrum handoff. Field testing results show that the testbed can find vacant channel to establish communication link without predefining a common control channel,and it can handoff to another vacant channel to continue the transmission when the current channel is reoccupied by primary user. The testbed offers a way for realization of cognitive radio technology. |
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| Keywords: | cognitive radio dynamic spectrum access spectrum sensing rendezvous spectrum handoff |
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