| 摘要: |
| 针对集中式协作能量检测算法严重依赖中心节点的问题，提出了一种基于一致滤波器
的完全分布式的协作能量检测算法。该算法不需要中心节点，次用户可以通过与其邻居次用
户进行局域的数据交换，实现基于数据级融合的协作频谱感知。仿真结果表明，该算法比现
有的集中式协作能量检测算法优越，能够实现安全的频谱感知。 |
| 关键词: 认知无线电 协作频谱感知 一致滤波 频谱感知安全 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（61271276）;新世纪人才计划资助项目(NCET-08-0891); 陕西省自然科学基金
资助项目(2010JQ80241); 陕西省教育厅资助项目(11JK0925,11JK0929,2010JK836) |
|
| A novel distributed cooperative energy detection algorithm |
| WANG Xiao-kan,LU Guang-yue,BAO Zhi-qiang,BAI Hui |
| () |
| Abstract: |
| In order to avoid the centralized cooperative energy detector′s heavy
dependence on the central node, a novel distributed cooperative energy detectin
g algorithm based on the consensus filter is proposed. The proposed detector doe
s not need the central node for cooperation, and the secondary users exchange th
eir energy information only with their neighbor users to realize the data level
cooperative energy detector. Simulations show that the proposed algorithm is muc
h superior to the existing centralized cooperative energy detecting algorithms i
n both detecting performance and robustness for security of spectrum sensing. |
| Key words: cognitive radio cooperative spectrum sensing consensus filter security of spectrum sensing |
