非规则LDPC码在AWGN信道下的性能仿真

This m file models a DPSK UWB system using a delay in one leg

CONVERT A MATRIX TO LOWER TRIANGULAR MATRIX

实现LDPC码校验矩阵的构造，采用Mackay 1A方法(Implementation of LDPC code check matrix construction uses Mackay 1A method)

说明：  十大算法程序及论文，数学建模必备，基于Matlab(Ten algorithms and papers, mathematical modeling essential, based on Matlab)

简单实现基于加权分数傅里叶变换的混合载波系统(Simple Implementation of Hybrid Carrier System Based on Weighted Fractional Fourier Transform)

ofdm papr降低pts技术（三种分割法源代码）(ofdm papr)

说明：  求两个信号之间的相干性，输入是两个不同的信号，如eeg和semg，输出一一个相干性的值的矩阵，附带傅里叶变换和semg和eeg数据集(To find the coherence between two signals, the input is two different signals, such as EEG and sEMG, and the output is a matrix of coherence values,with Fourier transform and sEMG and EEG data set)

中继系统中DF和AF两种不同中继方式下性能的比较，对于学习中继的人很好！(Comparison of DF and AF are two different relay mode performance in the relay system for the study of relay good! )

详细完整的LDPC编译码MATLAB代码！(Detailed and complete LDPC code MATLAB code!)

说明：  系统分别对无线通信中的几种重要的多址接入协议进行了仿真,包括pure-ALOHA,slotted-ALOHA,CSMA以及(Several important multiple access protocols in wireless communication are simulated by the system, including pure-ALOHA, slotched-ALOHA, CSMA, and the like.)