Modbus-function-code_and-format

ofdm系统模型，包含信道估计 FFT变换 QPSK 16QAM调制 插入导频等，非常全面。(OFDM system model, including channel estimation FFT transform QPSK 16QAM modulation insert Pilot and so on, very comprehensive.)

说明：  一个MIMO多天线检测算法集合，作者Irene Santos，包含常见的ML,ZF,ZF-SIC,MMSE,MMSE-SIC,GTA,GTA-SIC(A package of MIMO detection algorithm from Irene Santos.)

SIM300的封装，对于要用GSM搞硬件开发的人很(SIM300 package, for use GSM person engaged in the hardware development is)

数字信号处理，利用matlab语言仿真，对信号进行滤波。(Digital signal processing, using MATLAB language simulation to filter the signal)

51单片机MODBUS主机通信程序，平台KEIL4。使用MODBUS SLAVE测试成功。(51 MCU MODBUS host communication program, platform KEIL4. The MODBUS SLAVE test was successful.)

收集了华为五轮面试的经验，还有中兴通信的面试宝典，非常不错的资料 (Huawei five interviews to collect experience, and ZTE interview book, very good information)

说明：  无源被动雷达利用距离-多普勒信息实现目标定位(Passive Radar Detection using Range-Doppler Transformations get target location)

说明：  在单径瑞利信道中，设计一种时分的导引辅助的信道估计方法，用Simulink和m语言进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与理论误码率曲线进行对比(In the single path Rayleigh channel, a time-division guidance aided channel estimation method is designed. The simulation is carried out with Simulink and M language. The BER performance of BPSK is measured, and the relationship curve between bit signal-to-noise ratio and BER is drawn, and compared with the theoretical BER curve)

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.

说明：  DFE信道均衡算法及学习曲线绘制程序。程序为matlab代码。(DFE channel equalization algorithm and the learning curve drawing program. Procedures for the matlab code.)