Quadrature-amplitude-modulation---Wikipedia--the-

OFDM系统包括OFDM系统的调制解调，IFFT及FFT变换，保护间隔的加入对系统性能的改善，以及多径干扰、高速移动对系统误码率的影响。(The OFDM system includes modulation and demodulation of the OFDM system, IFFT and FFT transformation, the improvement of the protection interval to the system performance, and the influence of multipath interference and high-speed mobile on the system BER.)

说明：  根据卫星EIRP值、接收系统G/T值等参数仿真了卫星通信的上下行及总链路预算的matlab程序 及论文《卫星传输链路的计算与应用》(uplink and downlink margin budget)

说明：  TDMA的opnet仿真模型，比较简单，适合初学者(TDMA the OPNET simulation model is relatively simple, suitable for beginners)

说明：  Design of a transmitter, such as a control panel for the Airglisser

这是一个短信报警的小程序，它通过ADO操作读取发送的短信号码和内容，自动发送短信并产生日志(This is a message warning of a small program that reads through the ADO operation number and content of messages sent automatically send text messages and generate the log)

说明：  语音处理 改变声速变速不变调 改变声调不变速(Speech Processing Variable Speed Modification)

光纤通信基础知识，介绍了单模，多模光纤的特点(Optical fiber communication based on knowledge, introduction of the single-mode, multimode fiber characteristics)

说明：  分别用M序列gold序列正交gold序列设计直接序列扩频通信系统并分析误码率(Using m-sequence gold sequence orthogonal gold sequence to design DSSS communication system and analyze the bit error rate)

说明：  5G主同步信号m序列根据公式matlab生成(5G Pss m matlab generater)

说明：  实现图像游程编码的MATLAB程序，对二值图像压缩效果明显。(RLC)