一种改进的认知域自适应干扰温度估算算法

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.

Improved adaptive interference temperature estimation algorithm in cognitive domain

Based on the target of communication access, jamming avoidance and p ower control for cognitive radio(CR), the adaptive interference temperature esti mation algorithm is presented, which integrates adaptive line enhancement(ALE) w ith multi-taper sp ectrum estimation(MTE) and singular value decomposition(SVD). The relationship between power spectrum and interference t emperature is deduced. The performance of the algorithm is analys ed by simulation according to the wireless environment of IEEE 802.11g standard. The result shows that the proposed algorithm has higher performance.