LDPC_precode

用遗传算法求解二维函数的最大值问题，用matlab实现，但是不采用matlab遗传算法工具箱(Genetic Algorithm with the maximum two-dimensional function problems, and use matlab to achieve, but do not use matlab genetic algorithm toolbox)

说明：  这是一个基本的CDMA系统的调制与解调系统。包括随机信号的产生，调制还有相应的解调。(This is a basic CDMA coding and decoding system, it includes random signal generator and coding and decoding modules )

运用高斯模型，对手掌检测，自己写的程序，仅供参考，可以运行(Gaussian model is the use of palm detection, and write their own procedures for reference only, you can run)

This file is 802.11a+mimo system based on matlab simulink. Which contains nine mdl files, is what I do MIMO-OFDM find papers are available are welcome to download. This will work in Matlab 2006b.

语音信号的维纳滤波，频域实现和时域实现方法(Wiener filtering of speech signals, frequency domain implementation and time domain implementation)

Perform image processing, analysis, and algorithm development

关于IQ解调的一些matlab例程，觉得很好，对初学者很有帮助，就分享了。(About IQ demodulation some matlab routine, I feel very good, very helpful for beginners, it is shared.)

和Huffman-Tree一样，Shannon-Fano coding也是用一棵二叉树对字符进行编码。但在实际操作中呢，Shannon-Fano却没有大用处，这是由于它与Huffman coding相比，编码效率较低的结果（或者说香农-范诺算法的编码平均码字较大）。(And Huffman-Tree, like, Shannon-Fano coding is using a binary character coding. However, in practice it, Shannon-Fano, but not much use, since it is compared with the Huffman coding, coding efficiency is the result of a lower (or Shannon- Fano coding algorithm larger average code word).)

这个m文件实现了Newton raphsom算法，从而解决分布式功率流问题。(M realized this document Newton raphsom algorithm, so as to solve the problem of distributed power flow.)

说明：  线性调频信号的产生，并且有对回波信号的检测~(Linear frequency modulation signal is produced, and have the echo signal detection ~ )