LEO_Channel_MU

阵列信号处理的基本MUSIC算法以及改进的基于子空间投影加权的MUSIC算法，以及全空间加权MUSIC算法对DOA进行估计，以及几种算法的均方根误差比较(The basic MUSIC algorithm of array signal processing, the improved MUSIC algorithm based on subspace projection weighted, and the full space weighted MUSIC algorithm for the estimation of DOA, and the root mean square error comparison of several algorithms)

说明：  GPS中频信号频率和ca码搜索程序，原始数据可以在北京东方联星网站上下载(GPS IF signal frequency and ca code search procedures, raw data can be in Beijing Oriental Lianxing website)

GMSK基带信号的调制解调基于SIMULINK的系统，计算误码率，(Modulation and Demodulation of GMSK Baseband Signal)

无几何距离组合联合MW组合探测周跳的改进算法(No combination of geometric distance detection of the Joint MW combined cycle slip Algorithm)

QPSK的编译 设定噪声为高斯白噪声，对2ASK、2FSK、2PSK、2DPSK等各种调制方式及相应的主要解调方式下（分相干与非相干）的误码率进行统计，并与理论值进行比较，以图形方式表示误码率与信噪比间的关系。(QPSK compiled Set the noise is Gaussian white noise, right 2ASK, 2FSK, 2PSK, 2DPSK variety of modulation and demodulation mode corresponding to the main (sub-coherent and non-coherent) error rate statistics, and with the theoretical value comparison, a graphical representation of bit error rate and SNR relationships.)

Philips RC-5/6协议 Philips RC-MM协议 红外编码格式17- Toshiba TC9148P  NEC协议 经本人翻译为中文版本的，很好的开发档案，值得下载！(Philips RC-5/6 Philips RC-MM protocol agreement infrared code format 17- Toshiba TC9148P NEC protocol for the Chinese version translated by me, the good development of the file, it is worth downloading!)

该工程实现对单载波系统QPSK的频偏估计算法。调相信号在接收机相干解调时需要同频同相的参考载波，而发射机和接收机之间往往存在频率偏差，为了消除这种误差，必须在软件层面实现。使用了QPSK四相调制的信号特点进行载波频偏估计，经验证，效果较好。(This project implements frequency offset estimation algorithm for single carrier system QPSK. The phase modulation signal needs the same frequency reference carrier in the coherent demodulation of the receiver, and the frequency deviation often exists between the transmitter and the receiver. In order to eliminate this error, it must be implemented on the software level. The carrier frequency offset estimation is carried out by using the signal characteristics of QPSK four phase modulation.)

bcjr算法 map形式 适用于卷积码和turbo码(bcjr algorithm map form for convolutional codes and turbo codes)

Ethercat协议栈代码示例,基于C语言，已经调试通过(The example for Ethercat slave protocol)

Paper on hetrogenous network