qpsk-RRC

说明：  VB写的通过串口与考勤机连接通讯的程序,便于工作查看，调试。(VB written through the serial port and Attendance Machine Connection Communication Procedures, easy to see the work, debugging.)

该程序可以实现多个客户端互相通讯，如同聊天室(Multiple clients can communicate with each other, just like chat rooms)

产生数字信号处理中常用的几种窗函数，包括ectangular window , triangular window ,cosin window , Hanning window , Hamming window , Blackman window ,Papoulis window(producing a digital signal processing used in several window function, including ectangular window, triangular window. cosin window, Hanning window, Hamming window, Blackman window. Papoulis window)

Underwater optical wireless communication network

manual leica geooffice

OFDM+信道估计（DFT）单一文档，超级详细，对理解OFDM很有帮助，同时有助于了解如何对信道估计进行仿真(OFDM+ channel estimation (DFT) which is a single document, super-detailed, very helpful in understanding the OFDM ，at the same time help to understand how to channel estimation simulation)

说明：  这是从IGS上下的精密卫星钟差信息 间隔为30秒的钟差信息 希望对相关人员有所帮助(This is down from the IGS precise satellite clock difference information 30 seconds interval clock difference information related personnel would like to help)

74ls273的器件数据手册，是英文的7 4ls273的器件数据手册，是英文的74ls273的器件数据手册，是英文的(74ls273 device data manual is in English 7 4ls273 device data manual is in English 74ls273 the device data manual is in English)

HFSS 高低阻抗滤波器 5节，可调参数，优化(HFSS high and low impedance filter 5, adjustable parameters, optimization)

VB6.0与变频器的RS485或Modbus通讯，控制变频器的参数设定，运行状态，运行频率，读当前状态，电流，电压，频率，故障等。支持远距离控制。(VB6.0 and drive the RS485 or Modbus communications, control the inverter parameter settings, operation status, operating frequency, read the current state, current, voltage, frequency, fault and so on. Support remote control.)