MATLAB

matlab程序，演示了如何画出系统时域和频域的step相应(This demo shows how to plot the time and frequency responses)

word 版本的MATLAB教材，针对7.0，包含有7部分，讲述了MATLAB的基本内容。(word version of the MATLAB materials for 7.0, contains seven parts, describes the basic content of MATLAB.)

,在强干扰中提取信号,不仅要求有一定的信噪比,而且必须对信号作恒虚警处理.在自动检测系统中,对一定的检测门限来说,当干扰电平增大几分贝,虚警率就会大大增加,致使显示器画面饱和或计算机过载,这时即使有足够大的信噪比,也不可能做出正确的判决.为此在自动检测雷达中,必须具备恒虚警处(, extracting signal in strong interference, not only requires a certain signal-to-noise ratio, and must make constant false alarm processing for signal. In the automatic detection system, for a certain detection threshold, when the noise level increases, a few decibels will greatly increase the false alarm rate, led display screen saturated or computer overload, even if there is enough SNR at this moment, it is impossible to make the right decision. Therefore in the automatic detection of radar, must have a constant false alarm)

The Haar transform can be expressed in the matrix form as T = HIHT (inverse transform HTTH) where I is an NxN image matrix, H is an NxN transformation matrix and T is the resulting NxN transform. For Haar transform, the transformation matrix H contains the Haar basis functions hk(x). They are defined on a continuous, closed interval, x -[0, 1] for k = 0,1,2 ...,N -1 where N = 2n.( The Haar transform can be expressed in the matrix form as T = HIHT (inverse transform HTTH) where I is an NxN image matrix, H is an NxN transformation matrix and T is the resulting NxN transform. For Haar transform, the transformation matrix H contains the Haar basis functions hk(x). They are defined on a continuous, closed interval, x-[0, 1] for k = 0,1,2 ...,N-1 where N = 2n.)

前段时间在北大OJ平台上做的几个题目，主要用到几个知识点...(OJ platform some time ago at the university to do the subject ...)

说明：  本程序利用改进的CHOW算法，仿真了自适应OFDM系统的性能，并画出了SNR-BER仿真图。对于学习OFDM自适应资源分配者有很帮助。(This procedure improved CHOW algorithms, simulation of the adaptive OFDM system performance, and draw the SNR-BER simulation Fig. Adaptive OFDM for learning the distribution of resources to help those who have.)

说明：  in is file pso in the power point

动画龟兔赛跑的matlab源程序,动画龟兔赛跑的matlab源程序(Tortoise and the Hare animation matlab source)

It calculates the entropy of binary source

说明：  结构振动反应。在强烈地震波德作用下，2个自由度相对位移和绝对加速度的反应，考虑了阻尼的影响。(struture response due to ground motion.during a big ground motion,one 2 degree of freedom-structure s relative displacement and absolute acceleration response.consider damping raion.)