摘要
从认知无线电通信接入、干扰回避和功率控制的角度出发,采用自适应谱线增强技术对基于多窗口谱估计的干扰温度估算算法进行了改进,并进一步推导了功率谱与干扰温度的关系。依托符合IEEE 802.11G标准的无线环境对算法进行了性能仿真,仿真结果表明,改进算法具有较好的检测性能,提高了干扰温度估算的精度和可信度,具有一定的实际应用价值。
Based on the target of communication access, jamming avoidance and power control for cognitive radio （CR）, the adaptive interference temperature estimation algorithm is presented, which integrates adaptive line enhancement（ALE） with multi - taper spectrum estimation（MTE） and singular value decomposition（SVD）. The relationship between power speetrum and interference temperature is deduced. The performance of the algorithm is analysed by simulation according to the wireless environment of IEEE 802.11g standard. The result shows that the proposed algorithm has higher performance.
出处
《电讯技术》
北大核心
2012年第8期1298-1302,共5页
Telecommunication Engineering
关键词
认知无线电
认知域
干扰温度
多窗口谱估计
奇异值分解
自适应谱线增强
cognitive radio
cognitive domain
interference temperature
multi - taper estimation
singular value decomposition
adaptive line enhancement
