At input end , symmetric - to - asymmetric transformation ( sat ) is implemented before transmitting and transform symmetric signal into asymmetric signal . but additive symmetrical distributed noise is vanishes through odd - order cumulant 在输入端先采用对称?反对称变换，将对称信号变换为非对称信号，但对于信道上迭加的对称性噪声，通过奇数阶累积量运算后会抵消。
Focused on the application of the generalized cross correlation ( gcc ) time delay estimation ( tde ) in the car microphone array denoising system , gcc tde algorithm is analyzed theoretically and compared with high rank cumulation tde 摘要针对汽车环境中麦克风阵列语音去噪系统的应用，对广义相关时延估计方法进行了仿真，并与基于高阶累积量的时延估计方法作了比较分析。
Contents of cd , pb , cu and zn in duckweed and alternanthera philoxeroides there were determined . as a result , high loadings of zn and cu in both plants were found ; in the duckweed , high content of pb was also observed 对香花桥中小河流中生长的水葫芦和水花生cd 、 pb 、 cu 、 zn的含量进行测定，结果表明这两种水生植物zn和cu的累积量均很高；而浮萍对pb也有明显富集。
The focal point of this thesis was focus on the study and stimulation of direction of arrival ( doa ) estimation technology , including the algorithms based on the subspace decomposition and its improves , and a algorithm based on fourth - order cumulant 论文的重点放在对波达方向估计算法的研究及仿真上，包括了基于子空间分解的方法及其改进算法和基于四阶累积量的方法。
The algorithm based on cross cumulants uses high order statistics directly . the basic idea of the algorithm is shown by the characteristics of cumulants ; the performance of the algorithm is discussed ; the shortcomings of it are pointed out 本文介绍了高阶累积量，通过互累积量的性质阐述了算法的基本思想，分析了算法的稳定性能，对算法进行了仿真，指出了算法的不足。
The residual quantity of heavy metal such as lead , arsenic and cadmium , is much different in different part of the crop , which in the root is higher that in the stalk and leave , which in the spike is the lowest 重金属铅、砷和镉在植物体中的残留量因部位不同而有差异。其总的分布趋势是小麦根部的重金属累积量最大，其次是小麦的茎叶部，再其次是小麦的穗部，即根茎刑穗。
And then , the esprit bearing estimation problem . is reformulated using fourth - order cumulant matrices instead of auto - correlation matrices . by doing so , the fourth - order cumulant matrices of additive colored gaussian noises can be suppressed 在此基础之上，将esprit方法扩展到四阶方法，用四阶累积量矩阵代替自相关矩阵，实现对加性有色高斯噪声的抑制，提高算法的估计精度。
Fft is applied to data and spectra peak search is done , then using the data near the spectra peaks to compute two 4th - order cumulants matrix to form rotational invariance matrix pencil which the esprit algorithm can be applied to 对采样数据进行fft和谱峰搜索，截取谱峰附近数据构造一路信号的四阶累积量矩阵和二路信号的互四阶累积量矩阵，构成了一对esprit算法所需要的旋转不变矩阵束。
It deals with the communication signal processing and non - stationary signal processing under non - cooperation situations . many technologies such as hos , pattern recognition , clustering and neural network ( nn ) are used here for signal processing 本文涉及非合作条件下的通信信号处理、非平稳信号分析与处理，并将高阶累积量方法、模式识别、聚类分析和神经网络等多个领域的技术用于信号的分析与处理。
The computer simulation results show that the odd - order normalized cumluant algorithms give lower - complexity , faster convergence rate , smaller steady state mean square error ( msb ) and great fault tolerant ability in comparison with even - order normalized cumluant algorithms in the same situation 本文对于提出的各种算法，进行了计算机仿真，并与相同条件下的偶数阶归一化累积量盲均衡算法的仿真进行比较。
