matlab-gongjuxiang

用3中误差扩散滤波器实现误差扩散，分别是floyd stein, sierra, Stenenson滤波器(Error diffusion filter with a 3 to achieve error diffusion, respectively, floyd stein, sierra, Stenenson filter)

In this i attached matlab code for image retrieval function by finding the distance between training and testing features and arrange it in according to ascending order.

水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外，水声通信试验的成本高，难度大，也为水声通信研究带来挑战。 本软件对水声信道的仿真研究很有帮助，可以产生声线图，冲激响应，声速图等仿真文件，结合Matlab画图工具绘制图像，对水声信道的模拟仿真很有帮助。(The most difficult problem faced by underwater acoustic communication is multi-path interference, which since multipath fading caused by the magnitude of the received signal, and mutual inter-symbol interference caused by multipath signal reception, plus the marine environment of high background noise, low carrier frequency , very limited bandwidth and transmission conditions of time- space- frequency characteristic such that the communication process is very difficult. In addition, the high cost of underwater acoustic communication experiment, difficult, and challenges for the study of underwater acoustic communication. This software is useful for simulation study of underwater acoustic channel can produce sound chart, impulse response, sound velocity diagrams simulation files, combined with Matlab drawing tools to draw the image of underwater acoustic channel simulation helpful.)

带通滤波器，在信号处理时滤除直流分量和高频噪声，参数设置见程序说明。(The bandpass filter is used to filter the DC component and the high frequency noise in the signal processing. The parameter setting is explained by the program.)

关于无线网络matlab仿真的经典教材的源码，适合有一定基础的同志们学习(Matlab simulation of wireless network classic source material for a certain comrades based learning)

其内容有： 1.基带输入波形及其功率谱 2.QPSK调制信号及其功率谱 3.AWGN信道输出及其功率谱 4.通过瑞利信道之前和之后的信号星座图 5.在高斯白噪声和瑞利衰落信道条件下的误码性能以及高斯白噪声的理论曲线，所有误码性能曲线在同一坐标比例下绘制 (Bird 其 bleed at the nose 容 To: 1. 入 price turbulent Shu Huai Zhi形其 谱 2.QPSK Carex Kun Qin Zhi制信ulcers 其 Carex Kun 谱 3.AWGN信die HUAI embankment loved Kun 其 Carex 谱 4. 瑞 Services Toru Hitomi信die Core之前之up cavity ulcers信standard 5 star座. Now Inquiry assistant噪dumb声Rui Hitomi 瑞衰Miao Li Shu信die cavity误your tungsten loved consultation can begin Xikui NAI噪dumb声cavity理Sinopodisma 曲 All线，误bleed at the nose W Chu线曲 Xikui Now filthy instance, bird)

matlab写的将fig格式图片转成jpg格式的源代码(matlab write the fig format jpg format image into the source code)

Bayesian Model Selection

this is a diagram in parks transformation

说明：  波束空间处理：在波束空间应用MUSIC算法实现DOA估计。( MUSIC algorithm for DOA estimation in the beam space.)