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it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed

a way to achieve the best outcome (such as maximum profit or lowest cost) in a given mathematical model for some list of requirements represented as linear equations

matlab实例 MTLAB的一些实例说明(MATLAB Matlab examples of some practical examples to illustrate)

针对多椭圆检测问题提出了一种快速随机检测算法。该算法利用在图像中随机采样到的一个边缘点和 局部搜索到的两个边缘点以及这三个点的邻域信息确定候选椭圆,再将候选椭圆变换为对应圆,通过确认真圆来确 认真椭圆。在确定候选椭圆时,最大限度地减少随机采样点数‰ 剔除更多的非椭圆点,降低了无效采样,减少了无效 计算。数值实验结果表明:该算法具有良好的鲁棒性,其检测速度比同类算法快(Ellipse detection problem for many a fast random detection algorithm. The algorithm uses random sampling in the image of an edge point and the local search to the two edge points, as well as the three-point neighborhood information to determine the candidate ellipse, and then transformed into the corresponding elliptical candidate won, through the identification of real yen to confirm really elliptical. In determining when a candidate ellipse, to minimize random sampling points ‰ remove more non-oval points, reducing invalid sampling, to reduce the calculation invalid. Numerical experimental results show that: the algorithm has good robustness, and its detection faster than similar algorithms quickly)

2009年9月全国大学生数学建模获奖论文所需程序代码，其中有较详细的matlab编程，应该有些用处吧(September 2009 Mathematical Contest in Modeling program code required for the award-winning paper, including more detailed matlab programming, it should be useful)

这是通信中解调器重要的定时恢复部分的程序，我把它做成子程序，其中的算法原理，如想知道请link ne(This is the communication modems important part of the resumption of regular procedures, I see it causing subroutine, The algorithm principle, like to know please link ne)

在没有压电作动器的情况下，欧拉梁的振动特性及模态(Piezoelectric actuator, the the Euler beam vibration characteristics and mode)

ADC动态参数测试的matlab程序，可以测试DNL，INL，ENOB，SFDR等(ADC dynamic parameter test matlab program, you can test DNL, ​ ​ INL, ENOB, SFDR, etc.)

levy法编制辨识程序，基本精确辨识了系统各个参数，因为误差准则的原因，系数略有差别。(Levy method prepare identification procedure, basic accurate identification of each parameter of the system, because the cause of the error criterion, a slightly different coefficient.)

matlab开发工具箱中的支持向量机，关于超声波倒车雷达测距的，是信号处理的基础。( matlab development toolbox support vector machine, About ultrasonic parking radar ranging, Is the basis of the signal processing.)