earth

摘　要:根据HFC网络上行信道的特性,建立了信道模型 分析了上行信道中存在的各种噪声对QPSK 调制技术的影响。结果表明在C /N (传输信道载噪比)较低的情况下,采用QPSK调制方式,可以提高系 统的抗干扰能力。 关键词: QPSK 光纤同轴电缆混合网 上行信道 噪声(Abstract: HFC network in accordance with the characteristics of the uplink channel, the establishment of a channel model an analysis of the various uplink channel noise on the impact of QPSK modulation. The results show that the C/N (transmission channel carrier-to-noise ratio) lower, the use of QPSK modulation, can improve the system of anti-interference ability. Keywords: QPSK hybrid fiber coaxial cable network uplink channel noise)

以梯度投影法迭代直接求解出观测值的改正数，给出一个简单算例，以资验证。 (The correction of the observation is obtained by the interation with gradient projection method and a simple calculation example is given to verify it)

These file simulate Time domain array beamforming and show how LHE filter reduce mmse

damp_motion2资料的详细功能、包含内容说明(damp_motion2 information, including the content description)

backstepping tutorail

该程序可以进行扇形的短扫描重建，利用Parker加权函数。得到不错的重建效果。希望对大家有帮助。仅供参考！(This programme is a short-fan reconstruction.On the use of Parker weight function.I hope it will be useful.And the result of this programme is good.)

本书讨论了时间域、频率域、数字域、调制域电子测量的主要方法，介绍了应用MATLAB仿真的方法实现电子测量中的信号源(含VCO和PLL)、示波器、频谱仪、瀑布图仪、相位仪、眼图仪、逻辑分析仪、时域反射仪、取样示波器、矢量示波器、矢量网络分析仪等测量仪器，并简要介绍了各仪器的工作原理、参数设置要点和注意事项。书中还给出了大量的仿真实例，对一些典型例子进行了分析和讨论。(This book discussion has time domain, and frequency domain, and digital domain, and modulation domain electronic measurement of main method, introduced has application MATLAB simulation of method achieved electronic measurement in the of signal source (containing VCO and PLL), and oscilloscope, and spectrum instrument, and falls figure instrument, and phase instrument, and eye figure instrument, and logic analysis instrument, and Shi domain reflection instrument, and sampling oscilloscope, and vector oscilloscope, and vector Network Analyzer, measurement instrument, and briefly introduced has the instrument of work principle, and parameter set points and note matters. A lot of simulation results are also given in the book, conducted an )

自己写的一个 利用量子神经网络对iris数据进行分类的 matlab例子，希望对大家有用(An application of quantum neural networks to write Matlab examples of iris sort data, I hope useful to everyone)

LabVIEW的脚本节点允许用户执行外部脚本。具体地讲 ,使用脚本节点可以执行 MATLAB 脚本。由于许多人都曾经开发和使用过 MATLAB 脚本称为 m 文件,本论文将集中讨论使用 MATLAB 脚本节点来执行MATLAB脚本文件,其具体实现过程如下: (Control systems designed by humans are used to extend their physical capabilities,to compensate for their physical limitations,to relieve them of routine or tedious tasks,or to save money.)

关于城市表层土壤重金属污染分析的数学建模程序(Analysis of soil heavy metal pollution in the city)