4564

扩频通信完整的课件和习题答案，清华经典教材，学习无线移动以及跳频通信的基础(Spread spectrum communication courseware and exercises complete answer, Tsinghua classic textbook, learning, and frequency hopping wireless mobile communication base)

说明：  16QAM调制解调，包含QAM的调制解调Matlab程序(16QAM modem, including QAM modem matlab program)

中国移动位置业务Le Ls接口技术规范,详细规范,(China Mobile location Service Le Ls interface technical specification, detail specification,)

本程序通过分析OFDM信号的循环平稳特性，利用循环谱对OFDM信道进行估计。(This procedure by analyzing the OFDM signal is cyclostationary properties, the use of cyclic spectrum of the OFDM channel estimation.)

虚拟串口工具，可以在普通电脑上虚拟成对串口，方便进行串口编程的本地调试(Virtual Serial Port Tool, which can be virtual paired serial ports on ordinary computers, facilitates the local debugging of serial port programming.)

说明：  In this paper, a new direction-of-arrival (DOA) estimation method based on multiple Toeplitz matrices reconstruction is proposed for coherent narrow band signals with a uniform linear array (ULA).(Even in the case of a low signal-to-noise ratio and low snapshot number with half the array aperture reduced, the new method provides good performance on estimation and resolution.)

GB28181安防监控标准SPVMN软件的安装和配置说明文件。(The Document of GB28181 Project SPVMN set)

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.)

说明：  无源被动雷达对目标进行定位之生成雷达信号,产生信号(Passive Radar Detection using Range-Doppler Transformations generate signal)

WCDMA无线接口物理层，经典典WCDMA无线接口物理层，经典 (WCDMA radio interface physical layer, the classic typical WCDMA radio interface physical layer, the classic)