qpsk_ber_no_noise.m

系统学习MATLAB，讲了MATLAB内容，并附有各章例子程序(System to learn MATLAB, the MATLAB stresses the contents of each chapter with examples of procedures)

Nonparametric methods to analyze and detect knock injection engines. Two signals are considered: vibration signal and pressure signal

用四阶龙格库塔法求非线性系统的输入相应，同时用simulink建模比较。 (Using fourth-order Runge-Kutta method for the corresponding input nonlinear systems, and modeling using simulink comparison.)

说明：  这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT， 上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模 块，并统括系统性能的仿真验证了系统设计的可靠性。 (This is a relatively complete simulation of OFDM communication system design, including coding, modulation, IFFT, the upper and lower frequency, Gaussian channel model, FFT, PAPR suppression, various synchronization, demodulation and decoding of modular and system performance omnibus simulation of the system reliability.)

this code is about echo time delay and write whit matlab.

helps in maximal ratio combining,equal gain combining,snr improvement,select diversity

simulink based models

this code is pca base face recognition programme. . this code is pca base face recognition programme. it reads nots(here 5) faces from orl database and the rest (noc-nots) are used as test.

2005年J.S.Smith提出的局域均值分解LMD(Local mean decomposition)的原始文献，该方法可用于故障诊断、特征提取、振动信号分析等多领域，是较EMD更为温和的一种自适应算法，目前是热门研究方法。(This is the original article about LMD——Local mean decompositon. Ihis method is a novel adaptive decomposition. It is more better than EMD and achieve more and more attention.)

structure to store a complex number (consisting of real and complex part) and features addition, multiplication, and outs of complex numbers.