Turbo-Equalization

matlab实现的qpsk调制过程，很详细，包括调制解调、自动频率控制和误码率分析等过程(matlab implementation qpsk modulation process, very detailed, including the modulation and demodulation, automatic frequency control, and error rate analysis process )

说明：  仿真对数正态阴影衰落和仿真了一个BPSK通信系统，并与AWGN信道下的理论误码率结果进行了比较(Log-normal Shadowing PL model;Simulate a BPSK communication system, comparing simulated with theoretical BER results under AWGN channel)

The future satellite communication systems are re- quired to support the higher transmission data rate for providing the multimedia services by employing the e铿僣ient modulation method such as multi-level QAM.

基于深度限幅的OFDM峰均比抑制器的设计（限幅法是最简单直接的一种，以降低误码率性能 频谱畸变和计算复杂度为主要代价。）(matlab OFDM)

文章涉及OTDM系统的实现，对研究此方向的同学有一定帮助(OTDM systems involved in the realization of the article, students in this direction of research will definitely help)

OFDM降低峰平比采用预失真技术，程序仿真了加入预失真技术后的星座图与未加预失真的比较。结果比较明显。采用QAM映射。(OFDM PAPR reducing the use of pre-distortion technology, process simulation technology to join the pre-distortion of the constellation diagram and the following not pre-distortion comparison. More obvious results.)

这是一个matlab和optisystem联合调试用的误码率计算程序，里面的文件报过一个可以用optisystem7和optisystem13可以打开的OSD仿真图，还有一个MATLAB计算BER的程序。给出了如何设置系统的大纲。从OptiSystem的电信号输入到Matlab组件。当OptiSystem运行时，它将调用Matlab组件中的M文件，处理数据，然后将所得的电信号导出回OptiSystem。然后将输出信号连接到BER分析仪。经过我调试，文件齐全，放心下载(The attached image gives an outline of how the system should be setup. You should start with inputting the electrical signal from OptiSystem into a Matlab component. When OptiSystem runs, it will call the M-file in the Matlab component, process the data, and then export the resulting electrical signal back into OptiSystem.The output signal is then connected to the BER Analyzer.)

本文以12个例程详细介绍了opnet的使用，尤其适合初学者。(This paper details the 12 routines opnet use, especially for beginners.)

产生一些常见的离散时间信号完成两个有限长序列的线性卷积和,用滑动平均滤波器对混有噪声的信号进行滤波()

C-Type Filter Design Based on Power-Factor Correction for 12-pulse HVDC Converters