dbcg

《MATLAB高效编程技巧与应用：25个案例分析》源程序 数据(The "MATLAB efficient programming techniques and applications: 25 Case Studies" code and data)

SWTEST Shapiro-Wilk parametric hypothesis test of composite normality. [H, pValue, SWstatistic] = SWTEST(X, ALPHA, TAIL) performs the Shapiro-Wilk test to determine if the null hypothesis of composite normality is a reasonable assumption regarding the population distribution of a random sample X. The desired significance level, ALPHA, is an optional scalar input (default = 0.05). TAIL indicates the type of test (default = 1).

función para Reducir la escala de gris

说明：  计算图像的偏移量，用于图像间没有旋转的图像配准(Offset images are calculated for the image registration)

matlab仿真无线信道各种衰落特性（瑞利衰落），调制方式为QPSK(the matlab simulation wireless channel fading characteristics (Rayleigh fading), QPSK modulation)

一份FDAtool使用、参数设置较详细的资料( FDATOOL)

基于matlab编写的数字高程模型DEM插值程序(a program for DEM interpolation)

matlab 关于logistics映射的映射图，希望对您有所帮助(matlab logistic)

利用这个小数据量方法计算混沌时间序列的最大李雅普诺夫指数(With small amount of data calculated largest Lyapunov exponent of chaotic time series)

说明：  任务：设计一个4×2.5Gbit/s 长距离光纤传输系统，并利用OptiSystem 仿真验证。 要求： 1．采用波分复用技术，波长设置以100GHz 为间隔，频率分别为193.1THz、193.2THz、193.3THz、193.4THz，每个波长传输速率为2.5Gbit/s（NRZ），传输距离为300km。采用常规光纤，光纤损耗系数为0.25dB/km。 2．单通道光发送机最大输出功率为0dBm，光接收机的接收光功率不低于－26dBm，过载点为－10dBm。 3．可以采用EDFA 作为线路放大器，其中EDFA 的输入功率限制在－18～2dBm，最大输出功率20dBm，增益范围为13～25dB，噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify. Requirement: 1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km. 2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm. 3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)