QPSK_Waveform

用于信捷PLC与Labview之间的通信，可以作为学习的初版(Used for the communication between Sinjie PLC and Labview, it can be used as the first edition of learning.)

这个源代码是对MIMO系统的仿真，包括对MIMO信道的模拟以及不同的MIMO配置下，容量的特点。(This source code is a MIMO system simulation, including the simulation of the MIMO channel and different MIMO configuration, capacity characteristics.)

用matlab实现简单的bpsk系统，熟悉bpsk系统的特性(Implementing BPSK with MATLAB)

说明：  对mimo-ofdm系统的仿真，适合初学。(A simulation of MIMO-OFDM system is suitable for beginners.)

随机调制信号下的模拟ppm，结合PCA的尺度不变特征变换(SIFT)算法，包括主成分分析、因子分析、贝叶斯分析。( Random ppm modulated analog signal under Combined with PCA scale invariant feature transform (SIFT) algorithm, Including principal component analysis, factor analysis, Bayesian analysis.)

This project demonstrates OFDM with adaptive modulation applied to Multiple-Input Multiple- Output (MIMO) systems. The analysis and simulation is considered in two stages. The rst stage involves the application of a variable-rate variable-power MQAM technique for a Single-Input Single-Output (SISO) OFDM system. The second stage applies adaptive modulation to a general MIMO system by making use of the Singular Value Decomposition to separate the MIMO channel into parallel subchannels.

通信系统仿真原理与无线应用MATLAB仿真的源代码，内部有许多实例，让读者轻松掌握matlab(MATLAB simulation of the simulation principles of communication systems and wireless applications source code, there are many instances within, allow readers to easily grasp the matlab)

ijetty服务器的启动关闭以及资源下载，基本框架，直接import进eclipse就可运行(ijetty server startup shutdown, and resources, the basic framework for direct import into eclipse can be run)

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.)

这是在PC端使用S7 M SC om M控制,在S - 200 C侧使用免费的PI端口通信,实现他们之间的信息交换,来创建一个简单的分布式控制系统。1 s7 - 200系列P LC自由端口通信方式 (This is in the PC End use of 7 M SC om M controls, in S- 200 PI C side using the free port Communication, realize the information exchange between their, to construct a simple Distributed control system. 1 S7-200 series P LC free port communication way)