mskdemo.m matlab source code

Matlab simple operations written by safwan mahmood

说明：  OFDM是将高速串行数据分成成百上千路并行数据,并分别对不同的载频进行调制,这种并行传输体制大大扩展了符号的脉冲宽度,提高了抗多径衰落的性能。同时,在传统的频分复用方法中,各子载波之间的频谱互不重叠,频谱利用率较低。而采用OFDM技术,一个OFDM符号之内包括多个经过调制的子载波的合成信号,每个子载波在频谱上相互重叠,这些频谱在整个符号周期内满足正交性,因而在接受端可以保证无失真恢复,从而大大提高频谱利用率。(OFDM divides high-speed serial data into hundreds of parallel data channels and modulates different carrier frequency separately. This parallel transmission system greatly expands the pulse width of symbols and improves the performance of anti-multipath fading. At the same time, in the traditional method of Frequency Division multiplexing, the spectrum between the sub-carriers does not overlap each other, the spectrum utilization ratio is low. In the case of OFDM, an OFDM symbol consists of multiple modulated sub-carriers, each of which overlaps in the spectrum, which is orthogonal throughout the symbol period, thus, no distortion recovery can be ensured at the receiving end, thus greatly improving the spectrum utilization ratio.)

waterfill Water Filling Algorithm.

MTI雷达（动目标检测雷达）能够抑制杂波保留目标信号，本人提供了单延迟线MTI对消器频响，双延迟线MTI对消器频响，利用参差重频消除盲速影响，讨论MTI雷达参差比取不同的值对盲速的影响的matlab仿真源代码MTI_radar (MTI radar (moving target detection radar) can suppress clutter to keep the target signal, I provide a single delay line MTI canceller response, dual delay lines MTI canceller response, the use of repetition to eliminate blind speed mixed effects discussed MTI Radar varies on different values ​ ​ than the blind speed of matlab simulation source code MTI_radar)

这个压缩包括了通信系统的仿真建模原理，以及信道的模型，对初学者和有帮助！(This compression includes the principles of communication systems, simulation modeling, and channel models, for beginners and helpful!)

methods of Intelligent Systems and Intelligent Computing, very intersting and very useful for beignners.

用于仿真得到超材料的S参数后，利用S参数矩阵提取等效介电常数和磁导率(fter simulating the S-parameters of the metamaterial, the equivalent dielectric constant and permeability are extracted using the S-parameter matrix.)

说明：  用遗传算法和模拟退户算法实现了约束问题的优化。效果不错(The constraints are optimized by genetic algorithm and simulated backout algorithm. Good results)

learning of initiation of matlab programm

BPSK_CONVOLUTION_3[5 7]_H&S