part4

说明：  提出了正交频分复用(O FDM ) 系统中一种新的载波频偏估计算法L 载波频偏估计过程可分 为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围 是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下, 当N (训练序列长度的一半) 等于128 时, 其性能比Schm idl 算法提高约7127 dB 在多经信道下, 当 信噪比不是很高时, 新算法仍具有优势L(new carrier f requency offset est imat ion scheme in o rthogonal f requency division mu lt ip lex ing (O FDM ) system is p ropo sed. The carrier f requency offset est i2 mat ion includes acqu isit ion and t rack ing, and acqu isit ion as w ell as t im ing synch ro2 n izat ion can be perfo rmed simu ltaneou sly w ith h igh accu racy. The max imum acqu i2 sit ion range can be up to one half of overall signal bandw idth. The p ropo sed t rack2 ing est imato r is a max imum 2likelihood est imato r, and in AW GN channel, abou t 7127dB imp rovemen t is ob tained compared to the Schm idl’s algo rithm w hen N = 128 in mu lt ipath channel, the p ropo sed algo rithm wo rk s w ell at moderate SNR.)

BPSK仿真，Es/N0=0:10,得出BER与Es/N0的关系曲线，AWGN信道(BPSK simulation, Es/N0 = 0:10, come to the relationship between BER and Es/N0 curve, AWGN channel)

先进的pid控制 及其matlab的仿真 含源代码(Advanced pid control and matlab simulation with source code)

一种新型的配电网潮流计算的matlab源代码,基于前推回代法，并附有10kv配电网数据，利用新的判别手段，成功解决配电网不收敛的问题(A new distribution power flow calculation matlab source code, based on forward and backward substitution method, together with 10kv distribution network data, using new identification methods, successfully resolved the problem of the distribution network does not converge)

基于matlab的遗传算法程序 供来参考(Matlab-based Genetic Algorithm for reference)

matlab航天工程工具箱，相信对航天，卫星仿真的人能有用(Matlab toolbox aerospace engineering, I believe the space, satellite simulation can be useful)

离散余弦变换，用于matlab环境。使用C语言实现的源代码。(Discrete cosine transform, for the matlab environment. Using the C language source code.)

基于MATLAB的MUSIC算法的示例，过程简单易懂，适于新手学习(MATLAB-based examples of the MUSIC algorithm, the process simple, suitable for novice learning)

基于Hough变化的圆检测程序，以及最小二乘法的基本原理(Hough circle detection based on changes in procedures and the basic principle of least squares)

这是一个简单的用matlab编写的多目标遗传算法，可以供初学者参考(This is a simple multi-objective genetic algorithm using matlab, you can reference for beginners)