Baseband_System_QPSK

说明：  求mel频率倒谱系数的程序，求的准确，时间相比其他程序多一点(Mel frequency cepstrum seeking the procedure, find the exact time a little more compared to other programs)

tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network.

FDTD算法模拟二维TM波的传输问题，代码很简洁美观，试用于初学者(Transmission problems FDTD method simulation of 2D TM waves, the code is very simple and beautiful, the trial for beginners)

ofdm basic description

自相关法基音检测的MATLAB代码。自相关法计算速度较快的自相关函数法检测语音的基音频率，有效剔除了高频共振峰和噪音的影响，其估计基音频率准确性高，稳定性好，运算速度较快。(CAMDF)

说明：  simulink的PN码仿真。。。。。。。。。。。。。。。(The PN code simulink simulation. . . . . . . . . . . . . . .)

motor de induccion matlab

matlab编程的三个线性方程组求解子程序：cggm.m,fdm.m,febs.m.其中cggm.m为共轭梯度法求解子程序,fdm.m为最速下降法求解自程序,febs.m为三对角追赶法求解子程序.(Matlab programming three linear equations subroutine : cggm.m, fdm.m. febs.m. which cggm.m to conjugate gradient method subroutine, fdm.m for the steepest decline since the method procedures febs.m angle to catch up with three pairs method subroutine.)

Matlab编程实现FFT变换及频谱分析的程序代码(Matlab Programming FFT transform and spectral analysis of the program code)

matlab代码 各种信息 对于初学者很有用(matlab code a variety of useful information for beginners)