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说明：  利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知技术在低信噪比下的性能。实验结果表明:与传统能量检测方法相比,采用循环特征检测方法改善了认知无线电中频谱空洞的检测能力。(Based on the cyclostationarity of modulation signals, spectrum hole is detected, aiming at the improve- ment of the performance of spectrum sensing in low SNR situation. The results show that comparing with the tra- ditional energy detection technique, cyclostationarity-based spectrum sensing technique has greatly improved the detective ability in cognitive radio.)

通信基本仿真3,适合初学者学习的代码,包括了调制,分析等等:使用IIR filter的经典模拟滤波器（巴特沃斯Butterworth,切比雪夫Chebyshev）,Bartlett周期图谱，加窗Bartlett周期图谱，基带波形仿真，IIR的贝塞尔滤波器Bessel Filter，二进制对称信道Binary Symmetric Channel仿真，比特序列，Remez滤波，BPSK复合基带信号仿真，载波生成器，椭圆滤波器Elliptical Filter，FFT,FSK调制及解调，高斯噪声Gaussian仿真，直方图，理想AM，线性PLL，BP混淆器，理想MPSK，正交振幅调变（QAM，Quadrature Amplitude Modulation），正交相移键控(QPSK)，Rayleigh Noise瑞利噪声，Yule-Walker Psd功率谱密度函数。(matlab simulte)

FTF快速横向滤波算法，需要对四个横向滤波器－－基本滤波器，前向预测滤波器，后向预测滤波器和增益滤波器的更新。(FTF rapid horizontal filtering algorithm, the need for the four transversal filter- Basic filter, prior to the prediction filter, to the prediction filter and update the filter gain.)

对一个含有多次谐波的信号作FFT变换，利用相关分析法提取它的工频信号。(For a signal containing multiple harmonics for FFT transform using correlation analysis to extract its frequency signal.)

基于TI 28035 芯片的永磁同步电机无位置传感电机驱动程序,其中电机驱动算法放到CLA协处理器中执行,适合于双电机控制.(TI 28035 chip-based permanent magnet synchronous motor position sensing motor driver, motor drive algorithm on the CLA coprocessor suitable for dual motor control.)

Performance of Cyclostationary Features Based Spectrum Sensing Method in A Multiple Antenna Cognitive Radio System

Euler Runge_kutta 一维空间声场 波动方程(Euler Runge_kutta u4E00 u7EF0 u7A7A u95F4 u58F0 u573A u6CE2 u52A8 u65B9 u7A0B)

LMS时域均衡算法,多径信道+AWGN信道，很好的抑制了多径干扰(This is a LMS equalizer and the channnel is Multi_path channel and AWGN channel, it gives Error convergence curve)

说明：  利用Actor-Critic学习和径向基神经网络实现路径跟踪，可以跟踪直线和正弦路径(Actor-Critic learning and radial basis function neural network are used to realize path tracking. Linear and sinusoidal paths can be tracked.)

GPS信号捕获的源程序设计，提供的信号捕获的原始算法实现(GPS signal acquisition of the source design, providing a signal acquisition of the original algorithm)