9020A频谱分析仪测量实例和编程指南

利用gsoap开发的C++客户端和服务端例子(Developed using C++ gsoap client and server example)

二进制频移键控的调制解调方案，经典不容错过(Binary FSK modulation and demodulation of the program, a classic not to be missed)

使用cordic算法，基于verilog实现的atan功能，经过仿真验证，适宜工程使用。(ATAN,implemented with cordic.)

说明：  viterbi卷积码编码,译码,调试通过,可以直接使用(Viterbi convolutional code coding, decoding, debugging pass, can be used directly)

利用matlab GUI实现的串口编程例子，独立成分分析算法降低原始数据噪声，构成不同频率的调制信号。( Use serial programming examples matlab GUI implementation, Independent component analysis algorithm reduces the raw data noise, Constituting the modulated signals of different frequencies.)

16QAM数字基带信号系统仿真，包括发射机程序和接收端程序(16QAM digital baseband signal system simulation)

不同模态OAM的相位图，电场场强图，及用箭头表示相位变化(Phase diagrams, electric field intensity maps of different modes of OAM, and phase changes with arrows.)

实现16QAM完整的调制解调系统，包括基带信号串并转换，星座图映射，升抽样成形滤波，升采样半带滤波，数字上变频，功放的多项式非线性效应，加性高斯白噪声信道，接收端下变频，降采样，匹配滤波，绘制接收端星座图。(16QAM modulation and demodulation realize the complete system, including the baseband signal string and conversion, constellation mapping, sampling shaping filter liter, half liter sampling with filtering, digital up-conversion, amplifier polynomial nonlinear effects, additive white gaussian noise channel, the receiver end down-conversion, down-sampling, matched filtering, draw the receiver constellation.)

说明：  ? 了解3G移动通信网中关键技术CDMA的实现原理 ? 掌握matlab编程，实现CDMA原理仿真 ? 掌握matlab语言对于码分复用技术仿真的功能(Understanding the Implementation Principle of the Key Technologies of CDMA in 3G Mobile Communication Network Master the MATLAB programming and realize the simulation of the principle of CDMA Master the function of MATLAB language in simulation of code division multiplexing technology)

提供实现了（2，1，7）卷积码的维特比译码的源程序，采用了最大似然算法，介绍了软判决维特比译码算法过程的三个步骤：初始化、度量更新和回溯译码。(for achieving a (2,1,7) Convolutional Codes Viterbi decoding of the source, using the maximum- likelihood algorithm, introduced a soft-decision Viterbi decoding algorithm of the three steps : initialization, Metric update and backtracking decoding.)