bufenxiangguan

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. )

This template file is used to completely describe a system in a generalized ％ state space format useable by the ReBEL inference and estimation system. ％ This file must be copied, renamed and adapted to your specific problem. The ％ interface to each function should NOT BE CHANGED however. (This template file is used to completely describe a system in a generalized state space format useable by the ReBEL inference and estimation system. This file must be copied, renamed and adapted to your specific problem. The interface to each function should NOT BE CHANGED however.)

AM modem for beaginners

这是一个m文件，当系统存在噪声时，利用相关分析法辨识系统的脉冲响应，文件中还包含m序列的生成(This is a m documents, when the system involves noise, using the correlation analysis method to identify system impulse response, documents also include m series formation)

傅里叶变换和傅里叶变换的性质,周期信号和非周期信号的频谱分析,卷积和卷积定理,抽样信号的傅里叶变换和抽样定理,相关、能量谱和功率谱.(Fourier transform and Fourier transform nature, the cycle-cycle signal and the signal spectrum analysis, Convolution and convolution theorem, the sampling signal to the Fourier transform and sampling theorem related to the energy spectrum and the power spectrum.)

A Survey of Genetic Algorithms do autor M. Tomassini

An ad-hoc network with a sender, a destination and a third station act- ing as a relay is analysed. The channels are modelled containing thermal noise, Rayleigh fading and path loss. Di® erent combining methods and di- versity protocols are compared. The amplify and forward protocol shows a better performance than the decode and forward protocol, unless an error correcting code is simulated. To combine the incoming signals the chan- nel quality should be estimated as well as possible. Information about the average quality shows nice bene¯ ts, and a rough approximation about the variation of the channel quality increases the performance even more. What- ever combination of diversity protocol and combining method is used second level diversity is observed. The relative distances between the relay and the stations has a large e® ect on the performance.

binary genetic algorithm with matlab

前推回推法计算配电网潮流，已经通过验证，结果正确。同时计算出电压、电流、网损。(Calculation of forward and backward push distribution networks, has been validated, the results correctly. At the same time to calculate voltage, current, power loss.)

Monte Carlo晶粒生长模拟matlab程序(Monte Carlo simulation of grain growth in matlab program)