51yejing

Abstract—Selection combining cascaded with maximum-ratio combining (SC/MRC), which is particularly useful when site diversity is available, combined with low-density parity-check (LDPC) codes is able to combat the effects of fading. The biterror rate (BER) expressions of uncoded SC/MRC and SC/MRC with LDPC codes over an independent and identically distributed Rayleigh-fading channel are derived based on the Gaussian approximation approach. These expressions are also applicable to the selection combining and maximum-ratio combining as special cases. The derived expressions are in good agreement with simulation results and approach the density evolution (DE) thresholds. These expressions are able to achieve a significant reduction in computational time with a reasonable accuracy for analyzing the BER performance as compared to simulations and DE.

基于AVR单片机的模数转换程序编写，使用ICCAVR软件编写(Analog to digital conversion process based on the AVR microcontroller to write, to write software using ICCAVR)

采用载波移相技术和PR控制器的STATCOM仿真(Carrier phase shift technique H bridge cascade is simulated by STATCOM PR controller)

输入通道捕捉程序，适用于飞思卡尔JM60单片机，用于捕捉信号。(The input channels capture program for the Freescale JM60 microcontroller used to capture the signal.)

PWM输入+DMA，亲测可用，有需要的朋友可以自行下载。(PWM input + DMA, pro-test available.)

说明：  这是一个三相电流滞环PWM控制的逆变电路(This is a three-phase hysteresis current-controlled PWM inverter circuit)

Automatic Voltage Regulator Using TLBO Algorithm Optimized PID Controller

基于saber2007仿真的移相全桥DC-DC变换器，单路原理图，使用UC3875芯片(Simulation-based saber2007 phase-shifted full-bridge DC-DC converter, single schematics, using UC3875 chip)

说明：  用89C51单片机实现静态数码管的显示,用89C51单片机实现静态数码管的显示.(Static led display)

基于zigbee的电机的调试代码，需要用IAR打开。(Based on the zigbee motor debugging code, need to use IAR to open.)