高敏捷性的融合协同及部分中继协同主用户检测研究

项目名称： 高敏捷性的融合协同及部分中继协同主用户检测研究

项目编号： No.61201264

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 彭盛亮

作者单位： 华侨大学

项目金额： 25万元

中文摘要： 在协同主用户（PU）检测中，检测精度和检测时间都是重要的性能指标。现有协同PU检测的研究大多着眼于检测精度的改善，较少关注检测时间的影响。本课题拟兼顾检测精度与检测时间的需求，通过最大化敏捷性，设计出既准确又快速的协同PU检测算法，这对认知无线电技术走向实用有着重要的理论意义和应用价值。课题具体内容包括：（1）针对集中式次级网络中的融合协同PU检测，考虑到原有检测时间的定义具有局限性，我们引入融合阶段的时间开销对其检测时间重新建模，进而分析优化其敏捷性，设计出高敏捷性的数据融合协同和判决融合协同PU检测算法；（2）针对分布式次级网络中的中继协同PU检测，考虑到次级用户（SU）工作在频分多址或码分多址模式时没有空闲的SU担当中继节点的问题，我们提出部分中继协同模型用以实现中继，并通过优化该模型的中继策略使其敏捷性达到最高，设计出高敏捷性的部分中继协同PU检测算法。

中文关键词： 协同主用户检测；检测精度；检测时间；敏捷性；部分中继

英文摘要： In Cooperative Primary User (PU) Detection, both detection accuracy and detection time are of vital importance. Existing research on cooperative PU detection mainly focuses on the issue of improving detection accuracy, while ignoring the impact of detection time. This project, which is thought to be theoretically as well as practically meaningful for the realization of cognitive radio, aims to take into consideration both detection accuracy and detection time, and to design accurate and fast cooperative PU detection algorithms via maximizing their agility. The project is detailed as follows: (1) as for the fusion based cooperative PU detection which is usually implemented in centralized secondary networks, we investigate the time consumed by fusion stage and remodel its detection time as the conventional definition of detection time is not appropriate; moreover, by use of the new detection time, we analyze and maximize its agility, and design high-agility data fusion based and decision fusion based cooperative PU detection algorithms; (2) as for the relay based cooperative PU detection which is usually applied in distributed secondary networks, we propose a partial relay based cooperation model because the classic relay based cooperation model is out of work when secondary users (SUs) operate in frequency divisi

英文关键词： cooperative primary user detection；detection accuracy；detection time；agility；partial relay