| 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。 |
| 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 |
| DOI： |
|
| 基金项目: |
|
| Improved adaptive interference temperature estimation algorithm in cognitive domain |
| LIU Wei,WANG Hong-Jun,ZHANG Min |
| (PLA Electronic Engineering Institute,Hefei 230037,China) |
| Abstract: |
| 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. |
| Key words: cognitive radio cognitive domain interference temperature multi-taper estimation singular valu
e decomposition adaptive line enhancement |
