sa-qpso

Fixed-Point iteration(Function fixed_point(p0, N) approximates the solution of an equation f(x) = 0, rewritten in the form x = g(x), which is a sub-function the user has to enter. the call to the function fixed_point(p0, N) returns the root of the equation f(x),i.e. the fixed-point of g(x), if the procedure is successful or a sequence of iterates in case something goes wrong. p0 is the initial approximation and N the maximum number of iterations. If, after N iterations, condition |x(k)- x(k-1)| < tol is not satisfied, all iterated values will be displayed, accompanied by a message asking the user to either change p0 in case of divergence or enter another g(x) that does not lead to complex numbers arithmetics. Reasons for the program to go wrong are the divergence of iterates and/or appearance of complex numbers for example with functions involving sqrt(x) when one of the iterates is negative. )

现代社会发展要求通信系统功能越来越强，性能越来越高，构成越来越复杂；另一方面，要求通信系统技术研究和产品开发缩短周期，降低成本，提高水平。这样尖锐对立的两个方面的要求，只有通过使用强大的计算机辅助分析设计技术和工具才能实现(Social development of modern communication systems require increasingly strong, the performance is getting higher and higher, which constitute more and more complex On the other hand, communications systems technology research and product development to shorten the cycle, reduce costs, improve the level. This in sharp opposition to the two requirements, only through the use of powerful computer-aided analysis and design techniques and tools can be achieved)

separation nonlineaire

TEQC程序应用，有效的了解TEQC的使用，对于参考站的建立分析非常有帮助(TEQC procedures for the application of effective knowledge TEQC the use of reference stations set up for analysis very helpful)

说明：  这是国外一个PLS工具箱，还有GUI，非常方便，包括了iPLS、biPLS、MWPLS等常用PLS方法(This is a PLS Toolbox abroad, as well as GUI, very convenient, including the iPLS, biPLS, MWPLS and other commonly used methods PLS)

用matlab实现机器学习中的两个经典算法：k-means和knn。(Using matlab to achieve in two classic machine learning algorithms: k-means and knn.)

Suffled Frog Leaping Algorithm in Matlab

巴特沃斯滤波器设计，双线性变换法，代码不是很长……(Butterworth filter design, bilinear transformation method, the code is not very long ... ...)

用正交调制方法实现模拟调制，包括AM,DSB,SSB,LSB,FM,AM-FM等，实现后，显示时域波形和功率谱密度(Orthogonal modulation method used for analog modulation, including AM, DSB, SSB, LSB, FM, AM-FM, etc., we can show the time-domain waveform and power spectral density)

simulink做的BPSK的调制与解调，信号源是随机信号与PN码扩频调制，最后结果与随机信号比较一致(simulink do BPSK modulation and demodulation, the signal source is a random signal with the PN code spread-spectrum modulation, the final result more consistent with the random signal)