| 基于认知无线电的小卫星群通信动态频谱分配 |
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| 引用本文： | 刘辉峰,朱近康.基于认知无线电的小卫星群通信动态频谱分配[J].通信技术,2008,41(7). |
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| 作者姓名： | 刘辉峰 朱近康 |
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| 作者单位： | 1. 中国科学技术大学个人通信与扩频实验室,安徽合肥,230027;中国卫星海上测控部,江苏江阴,214431
2. 中国科学技术大学个人通信与扩频实验室,安徽合肥,230027 |
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| 摘 要： | 文中以认知无线电技术(cognitive Radio, CR)为基础,提出了一种基于CR的小卫星群通信动态频谱分配MAC方案.该方案允许未授权用户自适应地选取可用带宽,实现了动态频谱接入,有效地提高了频谱利用率.提出一种动态信道的跳预约多址接入(DC-HRMA)协议,在不需要公共信道的情况下,解决了信道有效接入与退让问题.仿真结果表明,该协议性能和主次用户数目的合理搭配相关.
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| 关 键 词： | 小卫星群 认知无线电 动态频谱分配 跳预约多址接入 MAC协议 认知无线电 小卫星 群通信 动态信道 频谱分配 Radio Cognitive Based Group Communication Satellite Little Allocation Spectrum 相关 合理搭配 用户数 协议性能 仿真结果 问题 公共信道 |
Dynamic Spectrum Allocation of Little Satellite Group Communication Based on Cognitive Radio |
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| LIU Hui-feng,ZHU Jin-kang.Dynamic Spectrum Allocation of Little Satellite Group Communication Based on Cognitive Radio[J].Communications Technology,2008,41(7). |
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| Authors: | LIU Hui-feng ZHU Jin-kang |
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| Affiliation: | LIU Hui-feng ,ZHU Jin-kang (PCN , SS Lab,University of Science , Technology of China,Hefei Anhui 230027,China,Maritime Satellite TT&C Department of China,Jiangyin Jiangsu 214431,China) |
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| Abstract: | In this paper, a dynamic spectrum Dynamic Spectrum Allocation MAC scheme of little satellite group communication based on Cognitive Radio is proposed. In this scheme, unlicensed users are allowed to adaptively select available spectrum, adopt dynamic spectrum access technology, thus improving spectrum utilization effectively. And a dynamic channel-hop reservation multiple access (DC-HRMA) protocol is also presented. It solves the problem of effectively accessing and quitting the channels without any common ... |
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| Keywords: | little satellite group cognitive radio dynamic spectrum allocation HRMA MAC |
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