稀疏天线优化

说明：  this paper is wemose D1 and raspberry pi 3 to smart home system

说明：  多径参数干扰下的ofdm系统的matlab仿真代码，可供学习(Matlab simulation code of OFDM system under multipath parameter interference can be learned)

移动通信系统的仿真 蜂窝小区系统中的切换(Switch in the honeycomb cell system of mobile communication systems simulation)

为了对空间辐射源进行精确定位" 建立了基于任意阵列对多目标源进行二维DOA估计的数学模型。将 MUSIC算法推广到三维空间阵列可以对辐射源进行二维高精度测向,但由于其需要估计接收数据的协方差矩阵和进行特征分解, 因而其计算量较大。利用多级维纳滤波器的前向递推获得信号子空间和噪声子空间，不需要估计协方差矩阵和对其进行特征分解，从而降低了MUSIC算法的计算量。将文中的方法应用于任意阵列的二维DOA估计中进行计算机仿真和实际侧向系统性能验证,实验结果均表明该方法达到了MUSIC算法的性能,但与常规MUSIC算法相比降低了计算量.( In order to space radiation source for precise positioning" based on arbitrary array to multiple target source 2D DOA estimation model. The MUSIC algorithm is extended to three-dimensional space to two-dimensional array of radiation source for high precision direction finding, but due to the need to estimate the covariance matrix and eigenvalue decomposition, and the large amount of calculation. Use of multistage Wiener filter forward recursion received signal and noise subspace, does not need to estimate the covariance matrix and the eigenvalue decomposition, which reduces the computation of MUSIC algorithm. This method is applied to an arbitrary array DOA estimation for computer simulation and actual lateral system performance verification, the experimental results show that this method achieves the performance of MUSIC algorithm, but with the conventional MUSIC algorithm reduces the calculation amount.)

介绍了16PSK与16QAM调制的概念，分析了调制的频带利用率和误码性能仿真，总结了16QAM调制和16PSK调制的优缺点。(Introduction of 16QAM modulation 16PSK with the concept of analysis of modulation bandwidth efficiency and BER simulation, summed up the 16PSK modulation 16QAM modulation and the advantages and disadvantages.)

MIMO系统的多径信道仿真程序，带有接收端和发送端的相关性计算，符合非物理模型下的MIMO信道(MIMO system in multipath channel simulation program, with the receiving end and sending end of the relevant terms, in line with the non-physical model of the MIMO channel)

仿真了不同距离下的多径信道衰落模型，包含大尺度衰落和小尺度衰落。(The multipath channel fading model at different distances is simulated, including large scale fading and small scale fading.)

说明：  ns2.33这是目前比较新的ns2版本，欢迎下载(ns2.33 This is relatively new ns2 version, welcome to download)

LDPC Codes – a brief Tutorial Bernhard M.J. Leiner, Stud.ID.: 53418L bleiner@gmail.com April 8, 2005

伽利略信号产生和仿真分析书中的全部源代码，包括导航各频段信号产生，测距码程序，以及BOC信号频谱相关特性。另有一另外的BOC信号程序例程~(all code in GALILEO Signal generation and simulation analysis)