fofdm

基于模拟退火算法的光学模式转换，为模分复用一种高效转换算法。(Based on the optical mode conversion of simulated annealing algorithm, a high efficiency conversion algorithm is used for modular division multiplexing.)

OFDM channel estimation DFT single document, ultra-detailed, very helpful for understanding OFDM, but also helpful for understanding how to simulate channel estimation

数字集群信道编解码程序，包括BCH和RCPC,属于欧洲ETSI Tetra标准。(digital trunking channel coding and decoding procedures, including BCH for RCPC and, European ETSI Tetra standard.)

针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)

这个是华为的VoIP文档，讲述清晰，值得阅读！(This is Huawei' s VoIP documents, about clarity, it is worth reading!)

16QAM调制的OFDM，在限幅作用下输入输出互信息的变化情况(Mutual information of 16QAM modulated OFDM, with various clipping )

本压缩包收集了较为经典的几种关于BCH和RS编译码的matlab程序，以及通信系统的仿真等。供大家参考学习，搬运整理而得(This compression package collects several classical matlab programs about BCH and RS coding and decoding, as well as the simulation of communication system. For your reference and study, handling and sorting out)

无线网络中分集合并，包含原理，流程图，仿真图，源代码(Cooperative Diversity in Wireless Networks)

ldpc编码的matlab实现，供大家参考(Matlab implementation of LDPC coding for your reference)

说明：  capl错误帧,在CANOE软件中使用，ECU开发测试时验证错误帧功能；(Capl error frame is used in CANOE software, and ECU verifies the function of error frame when developing and testing.)