fig1_13

RTL8201 circuit application

说明：  华为的5G非正交多址（NOMA）方案SCMA的仿真(Huawei's 5G non-orthogonal multiple access scheme SCMA simulation)

cdma系统matlab仿真程序，信道包括加性白高斯噪声，复合加性白高斯噪声，瑞利衰落，频率选择性瑞利衰落，双信道瑞利衰落。直扩调制，直扩解调。20段小程序，很不错。(cdma system matlab simulation program, channel, including AWGN, complex AWGN, Rayleigh fading, frequency selective Rayleigh fading, dual-channel Rayleigh fading. Direct Sequence Spread Spectrum modulation, demodulation DS. 20 small procedures, is pretty good.)

％threerayRayleigh.m ％ Last Homework pp. 253 5.31 (Second Edition English) ％ Default parameters ％ (threerayRayleigh.m%% Last Homework pp. 2 53 5.31 (English Second Edition) para% Default meters%)

支持向量机（SVM）主成分分析法进行预处理筛选变量( support vector machine (SVM)，PCA(principal component analysis))

说明：  用matlab对仿真信号进行分解。包括fft变换、傅里叶变换、希尔伯特变换。可观察分解图形。(MATLAB is used to decompose the simulation signal. The FFT transform, the Fourier transform, the Hilbert transform. Observe the decomposition graph.)

本文介绍了开放腔的基本原理和数学计算软件MATLAB。从四种基本腔体 模型出发，给出了用MATLAB设计开放腔高频参数计算软件的一般过程和方法， 并开发了开放腔计算分析软件。利用这一软件对四种不同类型开放腔进行了数 值计算分析，并将结果与实验测试和其他文献的计算结果进行了比较。结果表 明，本文的分析计算结果与实验以及文献[1]的分析计算结果有较好的一致性， 而本文提供的用MATLAB进行开放腔高频参数计算的方法简单易用、方便可靠、 计算效率高，是工程设计分析的一种快捷实用的手段。(This article describes the basic principles of open cavity and mathematical computing software MATLAB. Cavity from the four basic models starting with a given frequency open cavity design parameters MATLAB computing software and methods of the general process and the development of the open cavity analysis software. Using this software, four different types of open cavity of a numerical calculation and analysis, and the results with the experimental results and other literature were compared. The results show that the analytical results with experimental and literature [1] of the analytical results are in good agreement, and this provides an open cavity with the MATLAB high-frequency parameter calculation method is simple to use, convenient and reliable, the computational efficiency high, is the engineering design of a quick and practical means. )

关于MATLAB的一个很好的PPT。讲的是符号运算。对于初学者很好。页面也很漂亮。(MATLAB on a good PPT. Talking about the symbolic operation. Good for beginners. Page is also very beautiful.)

独立向量分析（IVA）是对独立成分分析（ICA）算法的一种扩展，将ICA中的单变量成分扩展为多维变量成分，可有效避免卷积盲源分离过程中的排序模糊性问题。(Independent vector analysis (IVA), a multivariate extension of independent component analysis, tackles the convolutedly mixed blind source separation (BSS) problem in a way to avoid the permutation problem by employing a multivariate source prior of the short-time Fourier transform (STFT) components. )

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