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(书)现代通信系统使用MATLAB第二章(ALLIANCES is a recently proposed cooperative random access protocol for wireless networks. In this paper we modify the original model to include user location information. We also derive pair-wise error probability (PEP) under Rayleigh flat fading channel and a power-law attenuation environment. Based on the PEP analysis we propose an optimal relay selection scheme, which achieves significant throughput gains as compared to the random relay selection scheme in the original ALLIANCES.)

General Embedded Quantization for Wavelet-Based Lossy Image Coding

信道编码中turbo码译码代码，采用logmap译码算法实现(turbo decode , lopmap function)

Image Transmitted over OFDM link level

使用mantlab，计算图像的一阶熵和二阶熵(computer the first-order entropy and the second-order entropy)

LDPC低密度奇偶校验码的演示程序包，适合初学者使用(LDPC LDPC codes demo packages for beginners)

potential distribution code (potential distribution code)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

马尔科夫随机场的图像分割方法，对图像的分割比较精确，运行时间较短(Image segmentation based on markover)

关于数字信号处理的几篇PPT文档(IIR/FIR滤波器设计等)，适合数字信号处理入门学习(Digital signal processing on several PPT files (IIR/FIR filter design, etc.), suitable for digital signal processing Introduction to learning)