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MAPAlgorithm
- This program includes: [5 7] convolutional code (encoder) + BPSK + AWGN + MAP (decoder). It evaluates Bit Error Rate and plots it versus SNR(signal to Noise Ratio).
MAP
- 这个Matlab程序实现了MAP算法-最大后验概率算法，同时包括对算法有：卷积编码、卷积解码，BPSK，AWGN。同时绘制它的误码率和SNR(信噪比)。 -The Matlab program achieved a MAP algorithm- maximum a posteriori probability algorithm, also include the algorithm are: convolutional coding, convolutional decoding, BPS
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.
logistic_dwt
- 】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的 低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。-The logistic- map sequences to encrypt the watermark are used. The original audio signal
RSCC_Turbo
- 运用Log-Map迭代译码算法实现Turbo码的简化译码，改善了码率，提高译码速度，减小了运算量。-The use of Log-Map iterative decoding algorithm decoding Turbo codes to simplify and improve the bit rate, improve decoding speed and reduce the computational complexity.
0712253
- I wrote this program for coloring any map with only 4 colors. Input for it is an bitmap file with 24 bit colors (must gray/scale). Output is a bitmap which is colored with maximum 4 colors.
H_matrix
- CMMB中校验矩阵的生成和相应的比特映射向量表的生成代码-CMMB in the check matrix generation and the corresponding bit-map generation code to Scale
ofdmusingmatlab
- Using MATLAB on a Orthogonal Frequency Division Multiplexing, and to map out the bit error rate simulation results.
STBC_MIMO_code
- 本代码是关于多天线技术空时块编码的通信系统仿真源程序，其中包括QPSK调制，QPSK解调，FFT,IFFT，STBC等模块,并给出误码率计算和性能仿真图。-The code is on the multi-antenna space-time block coding techniques of communication system simulation source code, including QPSK modulation, QPSK demodulation, FFT, IFFT,
matlab_watermark
- 本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
bit8
- 本代码使用matlab工具实现了一幅图片的位面图提取，且实现了在某个位面上加密信息、恢复信息的功能。并给出三幅图片的运行结果展示。-This code uses the matlab tool to achieve a picture of the bit plane map extraction, and the realization of the encrypted information in a bit plane, the function recovery information.
matlab_algorithms
- 高质量的OFDM仿真代码，有误码率仿真图。非常好用。-OFDM simulation of high-quality code, bit error rate simulation map. Very easy to use.
NewCallback
- matlab画图时，在查看图上大数据时将数据显示为8位有效位。-matlab drawing, in view large map data to display data as 8-bit valid bit.
rs
- rs码的simulink仿真图，可以观察加噪声和不加的误码情况-rs simulink simulation code map, can be observed without added noise and bit error conditions
Techniques-of-matching-images
- Variance map of an image is calculated by taking a square window of a set size around a center pixel, and calculating the variance of the values of the pixels. Census Transform is a form of non-parametric local transform (i.e. relies on the relativ
ZigBeeIEEE
- The implementation was built on Matlab/Simulink using fundamental components in Simulink to demonstrate how reliably complex modulation schemes can be built, cost effectively and efficiently [5]. The design of ZigBee transmitter using MSK mod
Bitlogistic
- Simulation of the Bit level Logistic map n is the number of the simulated points. x is the simulated time series. a is the parameter.
MAP
- Turbo码的最大后验概率译码，输出误码率与信噪比关系-Maximum a posteriori probability decoding of Turbo code output bit error rate and signal to noise ratio
TELE - 653 Digital Coding
- e Handbook Entry Communication concepts: Fourier transforms, random signals, Transmitter and receiver filters, matched filter, Nyquist criterion. Digital Modulation schemes: M-ary ASK, QPSK, FSK, CPM, spectral analysis of modulated signals, ML and