一种复合型自适应Turbo均衡算法

针对短波信道以及短波瞬间通信以帧为单位进行传输的特点,提出了一种新的复合型自适应Turbo均衡算法(CATEA)。该算法结合最小均方(LMS)算法和递归最小平方(RLS)均衡算法的优点,分别在训练和直接判决阶段调整均衡器参数,因而克服了LMS算法收敛慢以及RLS算法计算量大的缺点。通过将该均衡算法与Viterbi译码算法进行迭代均衡和译码,极大地提高了均衡器性能,同时保持了较低的复杂性。仿真和实验测试证明了该算法的有效性。     

Harmonic Retrieval Embedded in Hybrid Colored Noise: a Novel Pisarenko Method Based on Cross-high-order Cumulant

Spectral estimation method is an effective method in the case of parameter estimation of sinusoid signal in noises.It always applies cross-spectral estimation theory and high-order self-spectral estimation methods up to now.Yule-Walker equation based on cross-fourth-order cumulant is developed and Pisarenko method is provided in this paper.Simulation results show that the method is effective to retrieve sinusoid signal frequencies from hybrid colored noises and has good performance.     

Cauchy中值定理的逆问题

对Cauchy中值定理作了进一步的研究,得到了Cauchy中值定理的逆问题.     

非零均值乘法噪声背景下二维谐波自耦合分析

利用二维循环统计量方法对二维平稳乘性噪声与二维平稳加性噪声共存情况下的二维谐波的自耦合问题作了分析。定义了二维时间平均多矩谱和二维比例多周期图算法，运用该算法讨论了二维谐波频率对的^阶自耦合问题。以提取出2次及3次耦合信号中参与自耦合频率为例进行了仿真实验，结果表明：该算法能有效地提取出耦合信号中参与自耦合的频率。     

一类振动函数广义积分的收敛性

将有关振动函数的广义积分的结论加以推广，并给出其收敛性的判别方法。     

基于虚拟仪器的信号预处理方法研究

讨论了测试信号预处理消除趋势项的两种方法——平均斜率法和最小二乘法,使用美国NI公司虚拟仪器开发环境——LabVIEW对算法进行了仿真,并对这两种方法进行了比较。     

二维时变Volterra互惠系统的生存分析

采用积分均值和微分不等式方法，研究了二维时变Voherra互惠系统的生存状况．在种群体内毒素浓度不同且污染环境容量较大的情况下，给出种群弱平均持续生存、一致持续生存和绝灭的充分条件．     

H~p函数的平均增长

研究了Ｈｐ函数ｆ及其导数ｆ＇的平均增长，得到了ｆ与ｆ＇的平均模之间的关系，建立了Ｈａｒｄｙ－Ｌｉｔｔｌｅｗｏｏｄ反向不等式．通过讨论面积函数Ａ（ｒ）与ｆ＇的关系，得到了Ｈｐ函数／的导数ｆ＇的平均模刻画，并完善了Ｌｉｔｔｌｅｗｏｏｄ－Ｐａｌｅｙ定理．     

FORECASTING AUTOMOBILE WARRANTY PERFORMANCE IN PRESENCE OF ‘MATURING DATA’ PHENOMENA USING MULTILAYER PERCEPTRON NEURAL NETWORK

1. Introduction An automobile with over 7000 parts is a highly complex product. In spite of employing the best quality and reliability practices during product development, manufacturing, and assembly, unexpected failures during warranty period do occur and cost automobile companies billions of dollars annually in warranty alone. Warranty cost reduction programs in these companies thus receive a high priority. Various teams work together to achieve objectively defined targets for warranty cost…