复杂环境下的宽频段自适应协作频谱监测技术研究

项目名称： 复杂环境下的宽频段自适应协作频谱监测技术研究

项目编号： No.61301179

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 司江勃

作者单位： 西安电子科技大学

项目金额： 30万元

中文摘要： 本课题从保证国民生产安全和规范化频谱使用的需求出发，针对复杂电磁环境和地理环境条件下，宽带频谱监测传感器网络中监测性能差和监测效率低的问题，研究基于功率谱密度分段对消的信号检测技术、判决反馈的自适应单目标协作频谱监测技术和递增协作监测传输协议，根据判决结果和信道信息调整协作检测参数，自适应选择协作节点，提升频谱监测网络对系统中非法信号的挖掘与捕获能力，减小协作监测的能量和带宽消耗。研究宽频段多目标条件下的并行协作检测技术，构造并行协作优化目标函数，基于联盟博弈的方法最优化分配协作节点集合和监测频段，在满足频谱检测性能的条件下，提升频谱监测效率。

中文关键词： 传感器网络频谱监测；频谱监测；协作频谱感知；检测门限最大化；交织/共存方式

英文摘要： From the demand of guaranting the national production safety and normalized spectrum access, with regard to the poor spectrum monitoring performance and low spectrum monitoring efficiency under complex electromagnetic and geographic environment in wideband spectrum monitoring senor networks, we investigate the signal detection algorithm based on the power spectral density segment cancellation, adaptive cooperative sensing based on decision feedback, and incremental cooperative sensing transmission protocol.The fusion node adaptively adjusts the cooperative sensing parameters and selects the best cooperative sensing nodes according to the cooperative sensing result and channel state informatoin. As a result, the sensor networks's ability to capture the illegal signal is increased, and the energy and bandwidth consumption for transmitting the sensing result to the fusion node are decresed. Moreover, we focuse on the parallel cooperative spectrum sensing problem in the case of wideband multichannels.The objective function of parallel cooperative sensing is firstly constructered for the cooperative sensing efficiency.Then, according to the objective function, a coalition formatoin game for parallel cooperative spectrum sensing is deployed for the allocation of bandwidth and sensing nodes under the constraint of spec

英文关键词： Sensor networks for spectrum monitoring；spectrum monitoring；parallel cooperative spectrum sensing；the maximization of detection threshold；A hybrid interleave / underlay method