junhengqi

又一个利用网上寻呼提供商的web页面来发送网上寻呼的程序，可以支持很多提供商。(Another program which uses web pages of internet call provider to send internet calling , and supports many providers)

OFDM降低峰平比采用预失真技术，程序仿真了加入预失真技术后的星座图与未加预失真的比较。结果比较明显。采用QAM映射。(OFDM PAPR reducing the use of pre-distortion technology, process simulation technology to join the pre-distortion of the constellation diagram and the following not pre-distortion comparison. More obvious results.)

通过Prodave 6.0对西门子S7-300控制器（以太网）的I,Q,PI,PQ，M,DB，C,T等寄存器进行读写操作(Through Prodave 6.0 control Siemens S7-300 s (Ethernet) I, Q, PI, PQ, M, DB, C, T registers, read and write operations)

实现LDPC编码和译码，利用C语言编写，在matlab环境中画性能曲线。(Realize encoding and decoding of LDPC codes)

DL/T645-2007清晰文本版，可以CTRL+F(DL/T645-2007 clear text version, you can CTRL+ F)

说明：  汽车CAN总线数据采集软件，用于解析车辆总线数据的CAN ID。(An bus data acquisition software.Can idid for parsing vehicle bus data.)

一款电力远程电表自动抄表系统，采用VC开发设计，供大家相互学习使用。(Power system auto-collecting and managing system,designed with VC for lerning.)

MIMO-CDMA 系统的渐近频谱效率仿真(asymptotic spectral efficiency of MIMO-CDMA)

开关电源反激电路48V/1.5A。电路原理图(Switching power supply flyback circuit 48V/1.5A. Circuit schematic)

说明：  产生随机信号，采用4fsk调制方式通过一个水声信道，再采用非相干解调(Generate random signal, use 4FSK modulation to pass through an underwater acoustic channel, and then use incoherent demodulation)