PAPER2

Semi-supervised learning

此文件是麻省理工大学系统辨识课程，值得一看收藏(system identification courses in Massachusetts Institute of Technology , worth a visit)

induction generator in isolated grid

A circuit based simulation model for a PV cell for estimating the IV characteristic curves of photovoltaic panel with respect to changes on environmental parameters

Splice out the voiced plosive “b” in theword “be” and synthesize aword with an increase in the voice onset time of the “b.” What is the perceptual effect? Is it possible to transform the voiced plosive “b” to the unvoiced plosive “p” with this change in the voiced onset time? Consider attributes such as vocal cord vibration and aspiration. (In splicing, display the waveform and spectrogram of the word “be” and use the MATLAB function ginput.m.) Optional: If your transformed sound does not sound like a “p” then, again considering vocal cord vibration and aspiration, make a more accurate transformation.

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.)

matlab解线性方程组的直接法程序，里面包括了常用的matlab解线性方程组的直接法程序，包括手写的和matlab自还的函数。(matlab solving linear equations of the direct method procedures, which includes the commonly used matlab solving linear equations of the direct method procedures, including hand-written and self is also a function of matlab.)

设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响，可采用预白化方法,设计长度N=50的最小平方FIR逆滤波器(inverse filter design for least squares deconvolution, the assumption that the measurement noise, To reduce the impact of noise and possible pre-whitening method, the length N = 50 the minimum inverse square FIR filter)

对正选信号进行仿真，画频谱图，并分别在时域和频域对信号延迟。(Positive selection signal delay simulation)

matlab的神经网络，可以用来预测，分类(matlab neural network can be used to predict classification)