report_FFT_2010_10_31

This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

条带SAR基本成像程序，基于MATLAB开发平台，使用方便(stripmapSAR)

optical fiber encryption in drpe

Perl language course, very complete with examples

Code source for gaussian plotting

ldpc码在在twoto矩阵，即时间控制，频率两个参数变量的系统内仿真，matlab7.0编译通过。(LDPC code in twoto matrix, namely the time control, the frequency of the two parameters of the system simulation variables, matlab7.0 compiled through.)

对数输入据进行解调，并且对接收信号进行时间以及频率同步(Demodulation, time and frequency synchronisation)

平坦衰弱下的rician衰弱matlab仿真(rician matlab)

this is a matlab code for webinar.

OFDM and demodulation