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speex_echo_cancle
- 该代码是从SPEEX中提取出来有关回声消息部分的源码 它采取的是在频域进行操作，效果比较好" 经测试，如果原始声音与用于回声消息的参考声音之间存在时钟不同步时，极易发生在回音消息算法中的反溃发散现象. 压缩包中含有测试语音文件： Input_exsample_stereo.pcm: 8k16bit的线性pcm，含双通道语音。 vleft.pcm: 8k16bit linear pcm, 从Input_exsample_stereo.pcm 中分离出来的
kmplot
- LDPC codes BER simulation under AWGN channel. MacKay-Neal based LDPC matrix. Message encoding uses sparse LU decomposition. There are 4 choices of decoder: hard-decision/bit-flip decoder, probability-domain SPA decoder, log-domain SPA decoder, and si
fano
- 设有离散无记忆信源X,P(X)．二进制费诺编码为：1.将信源符号按概率从大到小的顺序排列2.将信源分成两组――按两组概率之差为最小分．3.上面一组编码为0，下面一组编码为1，一直分到一组只有一个信源为止．4.将一个信源分组得到的0和1全部连接起来，组成该信源的码字，信源即得到自己的费诺编码．-There be no X remembering the message source in case that having being scattered, binary Feinuo of P (X
byjc
- 对于一些图像来说，常用的边缘检测算法有时候无法设立合适的阈值将它们的梯度较小的模糊边缘检测出来。为了解决这个问题，有两种解决方法：将图像方差标准化，拉大模糊边缘的梯度值，或通过设置sigmoid函数，将像素所在区域的信息传递到梯度值中去，对其进行调整，就能找到合适阈值，有效地将模糊边缘提取出来。本程序把这两种算法实现并与与传统算法进行了比较。-For some images, the commonly used edge detection algorithm sometimes can not
send_text_message
- 在matlab中向美国的手机发送短信的小程序-send text messages to cell phones in the USA, directly from matlab. This program got featured in the official matlab file exchange site, matlabcentral. It is purely my original contribution.
LDPCBSN
- LDPC码既低密度奇偶校验码（Low Density Parity Check Code，LDPC），它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低, 结构灵活，是近年信道编码领域的研究热点，目前已广泛应用于深空通信、光纤通信、卫星数字视频和音频广播等领域。LDPC码已成为第四代通信系统(4G) -LDPC codes BER simulation under AWGN channel.
ALG023
- NEWTON-RAPHSON求解一个连续方程，f（X）=0，前提给一个初始值- NEWTON-RAPHSON ALGORITHM 2.3 To find a solution to f(x) = 0 given an initial approximation p0: INPUT: initial approximation p0 tolerance TOL maximum n
RSA
- This program applies Message Digest MD5 Algorithm Developed by Maimouna Al-ammar 5th Year, Computer Engineering Department, University of Damascus Information and Network Security Material
MD5
- This program applies Message Digest (MD5) Algorithm Developed by Maimouna Al-ammar 5th Year, Computer Engineering Department, University of Damascus Information and Network Security Material -This program applies Message Digest (MD5) Algorit
fixed_point
- Fixed-Point iteration-Function fixed_point(p0, N) approximates the solution of an equation f(x) = 0, rewritten in the form x = g(x), which is a sub-function the user has to enter. the call to the function fixed_point(p0, N) returns the root of the eq
ler_rinex_efPrecisas
- Read rinex file of gps message
DS_BPSK_TX
- This m file generates a DS BPSK transmitter(spread spectrum) using PRBS s which are modulus 2 added(exclusive ored)with the message and then used to BPSK modulate a carrier.
randinterval
- 利用随机序列进行间隔控制，选择消息隐藏位-Intervals using random sequence control, select the message hidden bits
smpp30
- 短消息代理(CMPP30 SMProxy)使用说明书-Short Message Agent (CMPP30 SMProxy) manual
suanshubianma
- 和其它熵编码方法不同的地方在于，其他的熵编码方法通常是把输入的消息分割为符号，然后对每个符号进行编码，而算术编码是直接把整个输入的消息编码为一个数-And other entropy coding method is that different places, other entropy coding method is to input the message is usually divided into symbols, and then encode each symbol, whil
000
- Mahalanobis距離是一個可以準確找出資料分布上面極端值(Outliers)的統計方法,使用線性迴歸的概念,也就是說他使用的是共變數矩陣以及該資料分布的平均數來找尋極端值的產生,而可以讓一群資料系統具有穩健性(Robust),去除不必要的雜訊訊息,這邊拿前面共變數矩陣的資料為例,並且新增了兩個點座標向量來做Mahalanobis距離的比較-Mahalanobis distance is the information that can accurately identify the dis
LDPC_BSN
- LDPC codes BER simulation under AWGN channel. MacKay-Neal based LDPC matrix. Message encoding uses sparse LU decomposition. There are 4 choices of decoder: hard-decision/bit-flip decoder, probability-domain SPA decoder, log-domain SPA decoder, and si
PAM
- 该程序完成一个16电平PAM数字通信系统的仿真，并测量了它的误码率。首先产生信息符号序列，该序列被当做4个信息比特一组，将16组符号映射到16个信息幅度。检测器计算距离，输出与真正传输的信息符号序列作比较，然后将差错计数。- This procedure completes a 16 level PAM digital communication system s simulation, and has surveyed its error rate. First has the message
pcm2
- THIS R THE PROGRAM FOR PULSE CODE MODULATION AND DPCM WHICH R HAVING THE RESULTS FOR WHICH A INPUT SEQUENCE IS TAKEN AND A CARRIER CODE IS ADDED TO THE MESSAGE SEQU TO GET THIS MODULTION DONE
pudn
- 1.MATLAB中的画圆程序：circle.m。 2.MATLAB中的GPS单点定位函数：pos_fix.m。 3.MATLAB中的读取RINEX格式的导航电文文件程序：readnavfile.m。 4.MATLAB中的读取YUMA格式历书的函数：ReadAlmanac.m。 5.MATLAB中的生成一节高斯马尔科夫序列：gmp1.m-1.MATLAB circle in the program: circle.m. 2.MATLAB single point in the GP