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dac8568驱动程序编程，可以控制dac8568进行输出(Dac8568 driver programming)

西门子S7300、S7400plc和组态王通讯常用的几种通讯链路(Siemens S7300, S7400plc and King several common communication link communications)

这是一个将语音信号通过PCM编码传输的仿真测试程序，内有详细注释，希望对大家有用。(This is a voice signal transmission through the PCM coded simulation testing procedures, with detailed notes, We hope that the right useful.)

说明：  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.)

恒频恒压(CVCF)逆变电源的输出电压波形质量是衡量其性能的重要指标之一。文章采用一种重复控制和双闭环控制相结合的电压波形控制策略，以重复控制器提高逆变电源输出电压的稳态精度，减小总谐波畸变率；以双闭环控制器达到较快的动态响应速度。该方案在一台采用TMS320F240 DSP控制芯片的50 Hz三相PWM逆变器上得到验证。(Constant voltage constant frequency (CVCF) Inverter output voltage waveform quality is an important measure of its performance indicators. Paper using a repetitive control and the combination of double closed loop control voltage waveform control strategy to improve the repetitive controller output voltage inverter steady-state accuracy and reduce total harmonic distortion to achieve a faster dual-loop controller dynamic response speed. The program uses TMS320F240 DSP in a 50 Hz phase control chip PWM inverter has been to verify.)

超宽带无线通信仿真平台，基于IEEE标准制定，IR-UWB(Ultra-wideband wireless communications simulation platform, based on IEEE standards, IR-UWB)

实现了bpsk中利用巴克码进行同步的功能。程序简单易懂，有注释。(This code use barker code in BPSK to accomplish the synchronization.)

实现通信系统的数字模拟混合预编码，进行干扰抑制，提高系统性能，降低硬件复杂度和实现成本(The digital analog hybrid precoding of the communication system is realized, the interference suppression, the performance of the system, the complexity of hardware and the cost of realizing the system are reduced.)

接受分集中采用选择式合并的函数，输出误码率和信噪比曲线(Acceptance of centralized using selective merge function, the output is bit error rate and SNR curve)

16QAM信号在高斯信道与瑞丽信道下的调制解调，误码率计算(Modulation and demodulation of 16QAM signals in Gaussian channel and Rayleigh channel, calculation of bit error rate)