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[系统设计方案] 111

直序扩频通信系统仿真框图可知,系统主要组成分为七个部分,分别为信源部分、扩频部分、调制部分、信道传输部分、解调部分、解扩部分和信宿部分。
The main components of the system are divided into seven parts: the source part, the spreading part, the modulation part, the channel transmission part, the demodulation part, the despreading part and the sink part respectively. (2017-03-22, matlab, 116KB, 下载3次)

http://www.pudn.com/Download/item/id/1490174592549347.html

[系统设计方案] analog-amplitude

调幅技术远比调频技术及数位广播技术简单,而且,广播也是现代社会不可缺少的一部分。所以,本文使用MATLAB软件下的Simulink对调幅广播进行建模与仿真。首先,介绍该课题研究的背景、目的、意义以及工作内容等。然后,在简要介绍MATLAB及Simulink的建模环境与仿真环境的基础上,通过对AM信号的调制与解调,对调幅广播系统系进行了仿真和分析,得出具体的仿真模型,并对仿真波形进行分析说明。最后,给出结论并提出好的改进方法。针对搭建的广播系统信噪比增益非常小,为了提高发射效率,采用另外一种幅度调制方式
Modulation technology is far more than the FM technology and digital broadcasting technology is simple.Moreover, the broadcast is an indispensable part of modern society.So,This paper use MATLAB software Simulink for the modeling and simulation of am radio.First of all, introduce the background, purpose, significance and content of the research.The brief introduction of the MATLAB and Simulink modeling environmentwith the simulation environment, on the basis of through the AM broadcast signal modulation and demodulation the AM broadcast system is the simulation and analysis, gives a detailed simulation model and simulation waveforms are analyzed.Finally (2017-03-22, matlab, 1089KB, 下载6次)

http://www.pudn.com/Download/item/id/1490174050507116.html

[系统设计方案] DOA_SRACV

基于协方差矩阵稀疏表示的信源估计程序和论文
Direction-of-Arrival Estimation Using a Sparse Representation of Array Covariance Vectors (2014-03-20, matlab, 138KB, 下载117次)

http://www.pudn.com/Download/item/id/2488941.html

[系统设计方案] fgd785687

浅海远程水声通信由于水声信道带来的严重多径干扰和衰落, 导致通信速率低、误码率高 以及接收端信噪比低等缺点。针对这一问题, 提出了一种比较有效的M 元线性调频(L FM ) 水声通 信技术。
Remote shallow water acoustic underwater communication channel because of the serious multi-path interference and fading, resulting in lower communication rate, error rate And the receiver signal to noise ratio and low defects. To solve this problem, we propose a more effective M-ary linear FM (L FM) acoustic communication ICT. (2011-12-25, matlab, 246KB, 下载57次)

http://www.pudn.com/Download/item/id/1741424.html

[系统设计方案] Wavelet_De-noising_for_BSS

提出了三种小波滤波和盲源分离的结合方法,用于带噪信号的分离,
Three wavelet filtering and the combination of blind source separation method for separation of signals with noise, (2008-11-21, matlab, 319KB, 下载206次)

http://www.pudn.com/Download/item/id/585157.html

[系统设计方案] ULA

已知:信号中心波长为2,天线阵元的间距为1米,快拍数为2000,空中有四个 源信号,假设它们的频率 四个源信号的方向分别为: 求: 1)在不加入噪声的情况下,观察并计算协方差矩阵特征值,并对它的特点 加以说明 2)分别采用MUSIC算法,CAPON算法, ESPRIT算法在下面四种情况下,对 上述四个信号源的波达方向进行估计,并画出它们的空间谱图; ①在不加入噪声的情况下, ②在加入高斯白噪声的情况下,假设信噪比为10dB 3)在信噪比变化范围为-20dB~+20dB时,分别采用MUSIC算法,CAPON算 法, ESPRIT算法,对上述四个信号源的波达方向进行估计,并画出波达方 向估计误差,随着信噪比变化的曲线图(即横轴为信噪比,纵轴为误差值) (2008-07-01, matlab, 76KB, 下载695次)

http://www.pudn.com/Download/item/id/502141.html
总计:6