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| 认知无线电应用讨论 | |
| 引用本文： | 陈金鹰,李晓华,陈斌,蔡方凯. 认知无线电应用讨论[J]. 通信技术, 2009, 42(10): 38-40 |
| 作者姓名： | 陈金鹰 李晓华 陈斌 蔡方凯 |
| 作者单位： | 1. 成都理工大学信息工程学院,四川,成都,610059 2. 纽约州立宾汉姆顿大学,电子与计算机工程系,纽约,宾汉姆顿,13902 3. 成都大学电子信息工程学院,四川,成都,610106 4. 成都电子机械高等专科学校,四川,成都,610031 |
| 基金项目： | 国家"十一五"科技项目，四川省教育厅自然科学类重点项目基金 |
| 摘 要： | 讨论了当利用灰色频谱进行认知无线电通信时，第二用户对授权用户频谱所造成的干扰，并对这种干扰进行了计算。进一步分析中，以授权用户的信号干扰噪声比余量为基础，讨论并仿真了第二用户在保证授权用户正常通信时自身的信噪比受到来自授权用户的影响。结果表明，在灰色频谱区域进行认知无线电通信时，为改善第二用户信号干扰噪声比，其发射功率与通信距离将会是动态调整的。 |
| 关 键 词： | 认知无线电 频谱 通信 干扰 |
Discussion on Cognitive Radios Application |
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| CHEN Jin-ying,LI Xiao-hua,CHEN Bin,CAI Fang-kai. Discussion on Cognitive Radios Application[J]. Communications Technology, 2009, 42(10): 38-40 | |
| Authors: | CHEN Jin-ying LI Xiao-hua CHEN Bin CAI Fang-kai |
| Affiliation: | CHEN Jin-ying,LI Xiao-hua(Edward),CHEN Bin,CAI Fang-kai |
| Abstract: | A potential interference from secondary users on primary users is discussed and computed when gray spectrum is used for communication with cognitive radios. Then in further analysis, according to the redundancy of signal to-interference-plus-noise ratio from the receiver of primary user, the effect that the second users are interfered by primary user for ensuring their normal communication is also discussed and simulated. The results show that when communicating in gray spectrum range with cognitive radios, the radio power and communication distance of the second users would be dynamically regulated in Order to improve their signal-to-interference- plus-noise ratio. |
| Keywords: | cognitive radio： frequency spectrum communication： interference |
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