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| 基于智能天线的认知无线电网络频谱访问协议 | |
| 引用本文： | 邵敏斯,毛建旭,黄晓霞.基于智能天线的认知无线电网络频谱访问协议[J].传感器与微系统,2012,31(10):70-74. |
| 作者姓名： | 邵敏斯 毛建旭 黄晓霞 |
| 作者单位： | 1. 湖南大学电气与信息工程学院,湖南长沙410082;中国科学院深圳先进技术研究院,广东深圳518055 2. 湖南大学电气与信息工程学院,湖南长沙,410082 3. 中国科学院深圳先进技术研究院,广东深圳,518055 |
| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费资助项目 |
| 摘 要： | 认知无线电技术可以择机地使用注册信道,从而提高频谱的利用率。但是这种提高只是局限于时域上的。将具有空间分隔特性的智能天线引入次无线电系统,设计了一种在空间上可以复用的频谱访问协议。该协议使次用户(SU)和主用户(PU)可以同时共存,优化了频谱和空间资源的分配,进一步提高了频谱的使用效率。此外,还对SU的传输成功概率和网络吞吐量进行了理论分析和仿真。结果表明:与使用传统全向天线的认知无线电相比,基于智能天线的认知无线电系统能获得更多的传输机会,吞吐量显著提升。 |
| 关 键 词： | 认知无线电 智能天线 频谱访问 协议设计 信道分配 |
Spectrum access protocol for cognitive radio network based on smart antenna |
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| SHAO Min-si , MAO Jian-xu , HUANG Xiao-xia.Spectrum access protocol for cognitive radio network based on smart antenna[J].Transducer and Microsystem Technology,2012,31(10):70-74. | |
| Authors: | SHAO Min-si MAO Jian-xu HUANG Xiao-xia |
| Affiliation: | 1.School of Electrical and Information Engineering,Hunan University,Changsha 410082,China; 2.Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China) |
| Abstract: | Smart antenna with the characteristics of spatial separation is introduced into cognitive radio which greatly improve the spectrum efficiency in space domain.In order to further improve the spectrum utilization efficiency,a spectrum access protocol which can be used in space and enables cognitive users to coexist with primary user and optimizes the allocation of spectrum and spatial resource and the using efficiency is improved.In addition,the successful communication probability and network throughput of the cognitive users are simulated and analyzed theoretically.The results show that compared with the Omni antenna,the cognitive radio systems based on smart antenna can get more opportunities for transmission,and throughput is significantly improved. |
| Keywords: | cognitive radio smart antenna spectrum access protocol design channel allocation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |