DF_fading

修改的PRI变换法，用于雷达信号分选，可以处理抖动的雷达信号(PRI modified transformation method for radar signal sorting, you can deal with the radar signal jitter)

Derive the theoretical 16QAM bit error rate (BER) with Gray coded constellation mapping in AWGN

cmpp3.0 最新实现 带spring功能(cmpp3.0 latest with spring function)

仿真了限幅方法减小PAPR，在MATLAB环境下实现仿真(Simulation of the limiter methods to reduce PAPR, in the MATLAB environment to achieve simulation)

把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。(To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold.)

说明：  Turbo码编译码的matlab源代码，包括logMAP算法与SOVA算法。可设置信道SNR参数，帧长度，删余系数等。(Turbo Codes Encoding and Decoding of the matlab source code, including logMAP algorithm and SOVA algorithms. Parameters can be set to channel SNR, frame length, deleted I coefficient.)

针对单水听器的时间反转镜，给出了时反结果。(For a single hydrophone time reversal mirror, given the anti results.)

说明：  主要计算信号的幅度感知排列熵（AAPE）(The amplitude sensing permutation entropy (AAPE) of the signal is calculated.)

matlab编写的turbo码示例程序，用于通信系统的信道编解码仿真(matlab prepared turbo code sample procedures for communication system simulation channel codec)

SMS短消息传输系统的程序代码，应用高级语言编写(SMS transfer systems)