信号调制识别是无线电领域的重要技术,在无线通信和频谱资源优化等领域中具有广泛应用,有效的调制识别方法对于未知信号的分析认证具有重要意义。文章提出了一种基于信号序列的调制识别方法,通过BiLSTM网络对信号的频域和时域序列数据...信号调制识别是无线电领域的重要技术,在无线通信和频谱资源优化等领域中具有广泛应用,有效的调制识别方法对于未知信号的分析认证具有重要意义。文章提出了一种基于信号序列的调制识别方法,通过BiLSTM网络对信号的频域和时域序列数据进行特征提取,并采用Attention机制对特征进行加权处理,最终利用S of tmax完成调制分类。通过在公开数据集RML2016.10.a上进行对比实验,证明了该方法的有效性。展开更多
The N-terminal signal sequence of glucitol pcrmease of Escherichia Coli (Gut22) and its analogue (Gut22Ana) were synthesized. The analogue had a Pro residue substituting for the His at the 7th position of Gut22 and a ...The N-terminal signal sequence of glucitol pcrmease of Escherichia Coli (Gut22) and its analogue (Gut22Ana) were synthesized. The analogue had a Pro residue substituting for the His at the 7th position of Gut22 and a Val residue substituting for the Glu at the 10th position. The intrinsic fluorescence emission spectra indicated that the binding of Gut22 with lipid bilayer was much stronger than that of Gut22Ana. The leakage experiments with calcein-loaded liposomes showed that Gut22 strongly perturbed lipid bilayers while Gut22Ana did not. The apparent partition constant of Gut22 for partitioning into phosphatidylserine/phosphatidylcholine bilayers was measured; the effect of membrane potential on the interaction of Gut22 with lipid bilayers was studied and the conformation changes of Gut22 and Gut22Ana upon interacting with liposomes were studied by the method of circular dichroism analysis.展开更多
文摘信号调制识别是无线电领域的重要技术,在无线通信和频谱资源优化等领域中具有广泛应用,有效的调制识别方法对于未知信号的分析认证具有重要意义。文章提出了一种基于信号序列的调制识别方法,通过BiLSTM网络对信号的频域和时域序列数据进行特征提取,并采用Attention机制对特征进行加权处理,最终利用S of tmax完成调制分类。通过在公开数据集RML2016.10.a上进行对比实验,证明了该方法的有效性。
基金Project supported by the National Natural Science Foundation of China.
文摘The N-terminal signal sequence of glucitol pcrmease of Escherichia Coli (Gut22) and its analogue (Gut22Ana) were synthesized. The analogue had a Pro residue substituting for the His at the 7th position of Gut22 and a Val residue substituting for the Glu at the 10th position. The intrinsic fluorescence emission spectra indicated that the binding of Gut22 with lipid bilayer was much stronger than that of Gut22Ana. The leakage experiments with calcein-loaded liposomes showed that Gut22 strongly perturbed lipid bilayers while Gut22Ana did not. The apparent partition constant of Gut22 for partitioning into phosphatidylserine/phosphatidylcholine bilayers was measured; the effect of membrane potential on the interaction of Gut22 with lipid bilayers was studied and the conformation changes of Gut22 and Gut22Ana upon interacting with liposomes were studied by the method of circular dichroism analysis.
