BP

MATLAB Denoising software for grayscale images

学习matlab的解微分方程的小程序，已经测试无误(The solution of differential equations matlab learning applets, have been tested correctly)

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.)

禁忌搜索（Tabu search）是局部邻域搜索算法的推广，Fred Glover在1986年提出这个概念，进而形成一套完整算法。 (Tabu search (Tabu search) is a local neighborhood search algorithm for the promotion, Fred Glover in 1986, proposed this idea, thus forming a complete set of algorithms.)

此为我老师写的RGELS算法，适合系统辨识的初学者(This is my teacher wrote RGELS algorithm, suitable for system identification of the beginners)

说明：  这是一个matlab的直方图均衡程序，先读入一副彩色图像，将其转成灰度图，输出该图的直方图，做均衡以后再次输出，可以看到均衡后图像直方图比较均匀了。(this is a histogram program based on matlab)

DUTY CYCLE OF BRUSHLESS DC MOTOR.MODELLED ON BASIS OF MATHEMATICAL RESULT

<Synthetic Aperture radar Signal Processing with Matlab Algorithms>的matlab代码。(the source of "<Synthetic Aperture radar Signal Processing with Matlab Algorithms>)

Wiener filter based on tracking a priori SNR usingDecision-Directed method, proposed by Scalart et al 96.(Wiener filter based on tracking a priori SNR usingDecision-Directed method, proposed by Scalart et al 96.)

三相SVPWM整流、逆变双向并网变换器，可以运行。(Three phase SVPWM rectifier, inverter bi-directional grid converter, you can run.)