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试说明卷积编解码的工作原理。 请用Simulink仿真卷积编码，并用Viterbi译码的方法进行解码，其中的编解码全部自己编写代码(S-Function方式)，在加性白高斯噪声信道中，画出比特信噪比与误码率的关系曲线。 (Description Convolutional codec test works. Please use Simulink simulation of convolutional coding and Viterbi decoding method used to decode, which codec to prepare all their own code (S-Function mode), in the AWGN channel, drawn-noise ratio and bit error rate curve.)

相位累加器，即DDS频率合成器的MATALB实现，采用M文件编写的S函数(Phase accumulator, that is, the DDS frequency synthesizer MATALB realized, the use of M' s S function documentation)

说明：  此程序是基于自适应限定记忆最小二乘法，运用递推算法。(This program is limited to memory based on adaptive least squares method, the use of recursive algorithms.)

说明：  matlab在数字信号处理中的应用。随着数字信号处理的发展，matlab可以非常方便的进行数字运算和逻辑判断。(matlab in digital signal processing applications. With the development of digital signal processing, matlab can be very convenient for digital computation and logic to judge.)

牛顿拉夫森法用来解决极大似然估计的问题。很好用。(Newton La Fusen method to solve the problem of maximum likelihood estimation. Good use.)

上传的m文件是采用MATLAb实现的数学曲线拟合(M file uploaded using MATLAB to achieve mathematical curve fitting)

Restauration virtuelle de l’art pariétal paléolithique le cas de la grotte de Marsoulas

line data for ieee 5,14,30 and 57 bus systems

说明：  基于matlab环境下的ARMA(1,1)模型的参数估计程序(Matlab environment based on ARMA (1,1) model parameter estimation procedures)

迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡，迫零均衡(zero-forcing)