[1]肖楠,梁俊,张衡阳,等.一种卫星认知无线网络高效频谱感知与分配策略[J].东南大学学报(自然科学版),2014,44(5):891-896.[doi:10.3969/j.issn.1001-0505.2014.05.003]
　Xiao Nan,Liang Jun,Zhang Hengyang,et al.High effective spectrum sensing and allocating strategy for satellite cognitive radio networks[J].Journal of Southeast University (Natural Science Edition),2014,44(5):891-896.[doi:10.3969/j.issn.1001-0505.2014.05.003]
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一种卫星认知无线网络高效频谱感知与分配策略()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第5期
页码:
891-896
栏目:
信息与通信工程
出版日期:
2014-09-20

文章信息/Info

Title:
High effective spectrum sensing and allocating strategy for satellite cognitive radio networks
作者:
肖楠; 梁俊; 张衡阳; 尹译; 王伟
空军工程大学信息与导航学院, 西安 710077
Author(s):
Xiao Nan;  Liang Jun;  Zhang Hengyang;  Yin Yi;  Wang Wei
School of Information and Navigation, Air Force Engineering University, Xi’an 710077, China
关键词:
卫星认知无线电;  频谱感知;  频谱分配;  有效性;  可用度
Keywords:
satellite cognitive radio;  spectrum sensing;  spectrum allocating;  validity degree;  availability degree
分类号:
TN927.1
DOI:
10.3969/j.issn.1001-0505.2014.05.003
摘要:
针对传统地面认知无线网络频谱感知机制直接应用于卫星通信网时存在的频谱感知效率与频谱利用率低下的问题,提出了一种新的适用于卫星认知无线网络的频谱感知与分配策略.该策略利用卫星覆盖范围大的优点,以卫星为频谱感知的中心节点,实现了对广域空间内多频段频谱的同步感知,克服了传统逐一频谱感知策略效率低下的问题.在此基础上,定义了频谱的有效性与可用度2个参数以表征空闲频谱特性.卫星节点和认知用户通过对空闲频谱的有效性与可用度进行综合分析,确定最佳可用频谱.理论分析与仿真结果表明,该策略提高了卫星认知无线网络频谱感知的效率,减小了认知用户与授权用户之间的频谱占用冲突概率.
Abstract:
To solve the problem that the efficiency of spectrum sensing and utilization are low when the traditional spectrum sensing technology is used in satellite network directly, a novel spectrum sensing and allocating strategy suitable for cognitive satellite network is proposed. In this strategy, by taking advantage of satellite’s wide coverage range and considering the satellite as the center node of spectrum sensing, the multi-spectrum simultaneous detecting is realized and the shortages of one by one spectrum sending mechanism of the traditional spectrum sending algorithm is overcome. Then, the validity and availability of the spectrum are defined to measure the characters of idle spectrum, which are used by satellite node and cognitive users to select the optimized available spectrum. The theoretical analysis and simulation results show that by using the proposed strategy, the efficiency of spectrum sensing can be improved, and the probability of spectrum collision between cognitive users and authorized users can be reduced.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-03-06.
作者简介: 肖楠(1987—),男,博士生;梁俊(联系人),男,博士,教授,博士生导师,liangjunhja@sina.com.
基金项目: 国家自然科学基金资助项目(61202490)、陕西省自然科学基金资助项目(2012JM8004).
引用本文: 肖楠,梁俊,张衡阳,等.一种卫星认知无线网络高效频谱感知与分配策略[J].东南大学学报:自然科学版,2014,44(5):891-896. [doi:10.3969/j.issn.1001-0505.2014.05.003]
更新日期/Last Update: 2014-09-20