Multisim-9-for-Educators

在分析高效宽频带变频系统的基础上提出一种可以把变频部分与多种调制方式灵活结合在一起的方法，并以QAM调制为例，给出具体算法．分析结果表明，该方法降低了对处理速率的要求，提高了处理能力(In order to design an efficient and flexible DDC／DUC system，this paper combined the signal processing of DDC／DUC with QAM system and presented a new method based on the analysis of this efficient broadband DDC／DUC system．QAM modulation was taken for example，and a detailed algorithm of a channel system with 0～30 MHz and 60 channels QAM was presented)

this file content the explanation architecture node in wireless sensor node......

最新台湾中央大学HHT程序；包含一个实例，EMD工具和EEMD工具；可以求瞬时频率(A few examples of how to use these programs are given, with a given dataset “gsta.dat”, which is the annual mean global surface temperature anomaly. In “gsta.dat”, the first column is the time and the second is the corresponding data value.)

2D 最大似然算法（ML），用于二维阵列信号处理的的DOA估计(An implementation of 2D ML algorithm, which is used for 2D DoA estimation in array signal processing.)

直接序列扩展频谱的源代码，用于产生直接序列，可进行现行的编码工作，用于无限通信中 (Direct sequence spread spectrum of the source code, used to produce direct-sequence, it can conduct the work of the existing coding for unlimited communication)

分析比较了16QAM的块状导频与没有加信道估计的性能比较OFDM系统(Analysis and comparison of 16QAM and no massive increase pilot channel estimation OFDM System Performance Comparison)

用于故障诊断的PCA方法例程5个(含KPCA)，利用PCA（主元分析）方法或者KPCA方法，进行工业系统的故障诊断程序，有详细的注释说明(PCA method for fault diagnosis routine five (including KPCA), using PCA (principal component analysis) method or KPCA method, industrial process fault diagnosis, a detailed explanatory notes)

normalized threshold vs the probability of false alarm in radar system.

DMC2210硬件手册。该手册是DMC2210控制卡的硬件参数说明以及硬件编程所应注意的问题等。(DMC2210 hardware manual. The manual is a hardware parameter descriptions and hardware programming DMC2210 control card should pay attention to the issues.)

基于瞬时频率的码元速率估计，mpsk函数和test_signal函数都在基于小波变换压缩包内(Symbol rate estimation based on instantaneous frequency, qpsk function and test_signal functions in the compression package based on wavelet transform)