jiefangcheng

说明：  利用Matlab仿真脉冲编码调制（PCM）及A律、μ律PCM对声音进行压缩编解码过程。 脉冲编码调制（PCM，Pulse Code Modulation）是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看，量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合，编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码，符合长途电话质量。根据量化方法的不同，PCM可分为均匀量化PCM和对数PCM两大类，对数PCM中，2Aμ律和律编码都已被定为国际标准。(Matlab simulation using pulse code modulation (PCM) and the A law, μ law PCM codec for voice compression process. Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding. The role of the encoder waveform is sampled signal sample quantization and coding. From the mathematical point of view, the process is to quantify the magnitude of the value of a continuous set of infinite number of maps into a finite number of discrete set of amplitude values​ ​ , encoding is to use a set of binary digits, said after a limited number of these maps. By folding the International Standardization of PCM binary code, in line with long-distance telephone quality. According to the different quantitative methods, PCM can be divided into uniform quantization PCM PCM and the number of two categories, on the number of PCM in, 2Aμ law and legal codes have been designated as international standards.)

认知无线电 频谱检测技术 基于MATLAB的仿真(cognitive radio)

说明：  this is good code in matlab

卷积编码，信道估计值得参考的论文，引用度很高，对写这方面论文有很大的参考价值。(Convolution coding, channel estimation worthy of reference papers, citing a high degree of writing papers in this area has great reference value.)

BPSK QPSK MSK 16QAM四种调制方式误码率对比(BPSK QPSK MSK 16QAM modulation error rate comparison of four kinds)

非线性切换Hmilton系统H-infinity控制，关于这个研究内容的matlab仿真代码(The matlab simulation code of H-infinity control of nonlinear switched Hamiltonian systems)

this code can simulate the channel model for IEEE 802.15.3c.(802.15.3c channel model including LOS and NLOS model )

将电力市场数据使用小波分解成为两个长度相等的低频和高频小波，然后可以用于灰色模型的建模和波形模型建模！(The electricity market data using wavelet decomposition into two equal length low and high frequency wavelet gray model can then be used for modeling and waveform modeling!)

该函数是matlab编写的对一列数据进行去平均处理，两种去平均的方法（里面有三个程序），里面有详细解释说明，看看即懂！(This function is a matlab prepared to go on an average of the data processing, two kinds of methods to average (there are three procedures), which has a detailed explanation, see that understand!)

推力轴承雷偌方程MATLAB编程求解油膜压力(MATLAB programming for solving oil film pressure of thrust bearing)