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用MATLAB语音实现产生线性同余伪随机数发生器(Generated using MATLAB voice to achieve a linear congruence pseudo-random number generator)

ofdm的发射机用matlab仿真实现，浅显易懂，适合初学者使用(transmitters ofdm simulation using matlab, easy to understand and use for beginners)

介绍Matlab的相关命令以及相关用法，可以把它看作一个工具书(Introduction of Matlab commands and related usage, you can think of it as a tool)

Elemination of hormonics in the 3 phase inverter

unit commitment by GA(select parent file)

一种基于时频比的地震信号处理方法，源程序如上所示(Than based on time-frequency seismic signal processing, source code as shown above)

该程序用于多普勒频率估计，可以估计多普勒模糊数与基带多普勒频率，从而得到解模糊情况下的多普勒频率，算法基于IEEE文章提出的wavelength diversity 算法所写的。(This programme is used to resolve the absolute doppler frequenc without doppler ambiguity.The algorithm is based on the wavelength diversity idea proposed by the IEEE paper.)

先得到一个定位初始估计值，再利用建立最大似然方程对这个定位初始估计值进行修正，从而得到更优定位结果值，方法更接近于最大似然方法。(Get the a position initial estimate, re-use to establish the maximum likelihood equations corrected for positioning the initial estimates, resulting in better positioning the resulting value is closer to the maximum likelihood method.)

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.)

MIMO系统信道估计的经典MUSIC算法，有解释，可完美运行(MIMO channel estimation system of the classical MUSIC algorithm, there is explanation of the perfect run)