MATLAB5_Xchengxushejiyuyan

matlab仿真程序，产生QPSK调制的信号，严格按照QPSK的调制步骤分I路Q路产生信号，最后两路相加，产生已调信号，调制信号随机产生，载波信号是余弦信号。(matlab simulation program to produce the QPSK modulation signal, in strict accordance with the QPSK modulation of the sub-step road Q road I have a signal, the sum of the last two, have been transferred signal, randomly generated modulated signal, carrier signal is a cosine signal.)

根据伪随机序列理论，由混合同余法产生均匀分布的随机数，进而根据中心极限定理来产生高斯噪声。 分析所产生的均匀分布和高斯分布随机信号的均值、方差、自相关等数字特征，估计其概率密度函数并进行分析，估计其功率谱密度并进行分析。说明该高斯噪声是否符合白噪声特性。 对该高斯噪声进行FIR低通滤波，估计输出低通型限带白噪声的功率谱、相关时间等，并结合白噪声通过线性系统相关理论来进行分析。 (According to the theory of pseudo-random sequence, a uniformly distributed random numbers by mixed congruential method to generate Gaussian noise, and then according to the central limit theorem. Produce a uniform distribution of the analysis and the mean of the Gaussian distribution random signals, variance, since the digital characteristics of the correlation, the probability density function is estimated and analyzed, it is estimated that its power spectral density, and analyzed. The Gaussian noise is in line with the characteristics of white noise. FIR low pass filter of the Gaussian noise, the estimated output of low-pass type band-limited white noise power spectrum, time, etc., combined with the white noise to be analyzed by linear system theory.)

RTD Temperature Sens热电阻式温度传感器经典教程or classic tutorial(RTD Temperature Sens heat resistance temperature sensor classic or classic tutorial tutorial)

heed algorithms for the wireless sensor networks

DPCM系统的简单sumlink仿真（7个量化等级，信源是正弦波）(DPCM system, a simple sumlink simulation (7 quantization levels, source is a sine wave))

crop white margin of images

Defines continuous-time linearised state-space model of Cessna Citation aircraft (slightly modified) as LTI object or as 4 matrices of state-space model.

求混沌时间序列的盒子维(box dimension)覆盖法(Seeking chaotic time series box dimensions (box dimension) covering method)

说明：  fastica实测数据，可以做数据的预处理，保留有用信号，滤除噪声(FastICA measured data, can do data preprocessing, retain useful signal, filter noise)

matlab keyongyuzixuedekejian