mimo-ofdm

matlab 基本语句描述，及一些基本内部函数，很有用的，欢迎共享，谢谢(Differential evolution algorithm is very popular in recentyears, it iswidely used in complex optimi- zation questionsbecause of it’s easy implementation and has less controlparameters. Butconventionaldifferen- tial evolution algorithm has a problem ofstagnation thatcan stop the algorithm convergence. )

GMSK 的调制与解调 可以出图 MATLAB(GMSK modulation and demodulation can be a MATLAB Figure)

本段程序主要写了认知无线电非视距误差下的仿真结果(The program is mainly written in paragraph cognitive radio simulation results under NLOS error)

说明：  瞬时测频的基础知识、多信道法瞬时测频、鉴频法瞬时测频、干涉仪比相法瞬时测频、驻波鉴相法瞬时测频、瞬时测频编码、数字计算法瞬时测频(Instantaneous Frequency Measurement of the basic knowledge, multi-channel method of instantaneous frequency measurement, frequency Instantaneous Frequency Measurement Act, interferometer phase method than the Instantaneous Frequency Measurement, standing-wave phase Instantaneous Frequency Measurement Act, Instantaneous Frequency Measurement encoding, digital calculation of Instantaneous Frequency Measurement)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

从国外精馏开源代码下载的间歇精馏的模拟程序，对于初学者应该很有用(Open source code downloaded from abroad distillation batch distillation simulation program, useful for beginners)

用matlab实现的最大化负熵的独立分量分析方法，作了正交化处理，可以同时分离出所有的独立分量（无噪声条件下）(Using matlab to achieve the maximization of the negentropy method of independent component analysis, orthogonal made of processing, can be isolated from all of the independent component (no noise))

harris角点检测。使用米粒图片可对角点的地方加入标记像素加以显示(harris corner detection)

说明：  一个单自由度结构的地震响应，文件包含EL地震波，采用三种方法计算，激励插值法，中心差分法和Newmark法。(The seismic response of a single-degree-of-freedom structure contains EL seismic waves, which are calculated by three methods: excitation interpolation method, central difference method and Newmark method.)

DEMODULATOR: This function performs demodulation of the forward Channel packet, based on RAKE Receiver Block Diagram Input Signal -> [Matched Filter] -> [Sampler] -> [RAKE Receiver] -> [Walsh] -> [DeSpreading] Inputs: RxIn - input signal (I/Q) analoge PN - PN sequence (used for De-spreading) MF - matched filter taps Walsh - Used row of Walsh matrix for recovering