figure snr

说明：  OFDM多径信道的仿真和模拟,有效的仿真了多径信道(simulation of OFDM through multipath channel)

实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装(实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装)

a file for digital modulation

华为内部员工学习资料，对于想进华为的朋友会有很大帮助。(The internal staff s learning materials in huawei is more helpfull for someone who want to go huawei.)

中国移动通信互联短信网关接口协议CMPP3(CMPP3)

很好的OFDM系统载波同步算法，采用了长短训练序列分别进行小数倍频偏估计和整数倍频偏估计(This is a good carrier synchronization algorithm for OFDM system, using the long he short training sequences respectively to fractional frequency offset estimation and integer times frequency offset estimation)

MC-CDMA的matlab代码 包括发送，接收及通过nakagami信道(MC-CDMA, including the matlab code to send, receive and pass the Nakagami channel)

本科论文，有限元法求解对流扩散方程。文后有附带的程序，适合入门使用！可以对照文章内容，学习程序!(A paper for FEM.)

说明：  针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

说明：  对ofdm不同cp长度下系统性能的分析(Performance analysis of OFDM systems with different CP lengths)