exa070903_remez_2

The Interleaved Frequency Division Multiple Ac- cess (IFDMA) scheme is based on compression, repetition and subsequent user dependent frequency shift of a modulated signal. Multiple access is enabled by the assignment of overlapping but mutually orthogonal subcarriers to each user. In this paper it is shown that IFDMA can be regarded as unitary precoded OFDMA with interleaved subcarriers. On the other hand, IFDMA is shown to be a CDMA variant with frequency domain orthogonal signature sequences and chip interleaving. Thus, it combines the advantages of single and multi carrier transmission such as low peak to average power ratio, orthogonality of the signals of different users even for transmission over a time dispersive channel and low complexity. Simulation results show the good performance of coded IFDMA transmission over a mobile radio channel for different data rates.

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用matlab写的一个验证卷积定理的程序，即时域的卷积对应着频域的乘积。(using Matlab write a convolution theorem certification procedures, the immediate domain convolution corresponds to the frequency domain product.)

prony信号处理识别低频振荡模式提取特征根阻尼比(Prony signal processing to identify low-frequency oscillation modes extracted eigenvalue damping ratio)

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General APSK system via matlab

《MATLAB神经网络30个案例分析》中的第22个例子，案例22 LVQ神经网络的预测——人脸朝向识别。希望对大家有一定的帮助！ (The MATLAB neural network analysis of 30 cases of 22 example, 22 cases of LVQ neural network prediction, face toward the identification. Hope to have certain help to everybody!)

这个与相应的教材相对应的matlab代码，如果有需要的可以下载，免去手动输入的麻烦(This matlab code corresponding with the corresponding textbook, if need can be downloaded, eliminating the need to manually enter the trouble)

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