xinyuanshumu

终于找到了mpsk信号的调制，一家外国网上的，有用的就下，大家多交流啊(Finally found a MPSK signal modulation, a foreign line and useful on the next, more than U.S. exchanges ah)

说明：  利用matlab进行平差计算，体现矩阵运算的强大功能和方便性(Using matlab for adjustment calculation, reflecting the power of matrix operation and convenience)

说明：  这是基于生物学中实际神经元动作电位产生机制而建立的神经元发火模型。(This is based on the actual biological neurons mechanism of action potentials and the establishment of neurons ignition model.)

说明：  《MATLAB 7.0从入门到精通》一书的配套程序——第3章的程序。(&quot MATLAB 7.0 from the entry to the master,&quot a book supporting the program- Chapter 3 of the program.)

BP神经网络的设计实例(MATLAB编程)，两种不同的训练算法(BP neural network design examples (MATLAB Programming), two different training algorithms)

计算离散时间信号间卷积和，并确定卷积信号的起止时刻点 信号处理卷积例程(convolution routine for signal processing % -------------------------------------------------- % [y,ny] = conv_m(x,nx,h,nh) % y = convolution result % ny = support of y % x = first signal on support nx % nx = support of x % h = second signal on support nh % nh = support of h)

说明：  针对低信噪比环境下基于能零比的端点检测方法准确率低的问题,提出了一种结合谱减法和短时零熵法的端点检测方法。首先通过功率谱减法对带噪语音进行降噪处理,然后结合短时平均过零率特征与谱熵特征,构造出一种新的语音参数,即短时零熵,最后运用双门限算法进行端点检测。实验结果表明该方法在复杂噪声环境下具有良好的端点检测性能,降低了检测的误判率。(To solve the problem of low accuracy of endpoint detection method based on energy zero ratio in low SNR environment, an endpoint detection method combining spectral subtraction and Short-term zero entropy method is proposed. Firstly, the noise is reduced by power spectrum subtraction, then a new speech parameter, short-time zero entropy, is constructed by combining the short-time average zero crossing rate and spectral entropy. Finally, the double threshold algorithm is used for endpoint detection. The experimental results show that this method has good performance of endpoint detection in complex noise environment, and reduces the rate of detection error.)

说明：  含有噪声的余弦序列，分别采用周‘期图法’与‘改进协方差法’估计序的功率谱(Contain noise cosine sequence, were used weeks period diagram with the improved covariance method estimates the power spectral sequence)

里德穆勒码的编码和解码过程，以及误码率曲线仿真。(Lidemule code encoding and decoding process and error rate curve simulation.)

this file implement weighted linear method in pattern recognition