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LDPC码不同译码算法对比。码长512，码率1/2.(LDPC code decoding algorithm comparison. Code length of 512, a rate 1/2.)

说明：  自适应滤波器作为一种现代滤波器，在通信领域有着广泛的应用. 阐述了LMS以及RLS自适应滤波器的相关原理及其在通信系统去噪中的应用，并用MATLAB对自适应滤波器的去噪结果进行了相应的仿真，仿真结果直观地体现了自适应滤波器的去噪性能。 本文对自适应滤波器系统进行剖析，基于QPSK调制后的信号，并对该信号加工成为不同信噪比如SNR=0Db、SNR=5dB、SNR=10dB的信号，进行了两种分别基于LMS自适应滤波和RLS自适应滤波的操作。并对添加了有色高频噪声等加噪处理来模拟通信过程中的实际应用环境，测试所设计的低通滤波器对于噪声信号的滤波性能，并对结果进行分析总结。(As a modern filter, adaptive filter has a wide range of applications in the field of communication. This paper expounds the relevant principles of LMS and RLS adaptive filter and their applications in the de-noising of communication system, and simulates the de-noising results of adaptive filter with MATLAB. The simulation results directly reflect the de-noising performance of adaptive filter. In this paper, the adaptive filter system is analyzed, based on the QPSK modulated signal, and the signal is processed into different signal-to-noise, such as SNR = 0dB, SNR = 5dB, SNR = 10dB signal. Two kinds of operation are carried out based on LMS adaptive filtering and RLS adaptive filtering respectively. In order to simulate the practical application environment in the communication process, we add colored high-frequency noise to test the filtering performance of the designed low-pass filter for noise signal, and analyze and summarize the results.)

说明：  基于SimuLink的数字通信链路仿真 包含QPSK及16QAM模式下的链路计算(Simulation of digital communication link based on Simulink Including link calculation in QPSK and 16QAM mode)

Matlab仿真，ＭＩＭＯ信道下直视情况下信道容量的仿真及结果！(Matlab simulation, the simulation results of channel capacity in the case is open MIMO channel!)

this is for calculate qam and it is very good to practice so good u can play

This includes how to protect the speaker using matlab functions.

无线光通信中的几种常见调试方式的误码率性能(the performance of bit error rate of some modulation schemes in wireless optical communication)

MIMO多天线收发 各种性能比较（BER曲线） 包括MMRC EGC SC Alamouti V-BLAST。信道为瑞利信道，有2种，相关和非相关。测试仿真结果 请运行文件名带plot的。(MIMO multi-antenna transceiver various performance comparison (BER curve), including MMRC EGC Ala SC mouti V-BLAST. Rayleigh channel to channel, two species, and correlated. Simulation results of tests requested documents were operating with the plot.)

介绍移动通信gsm原理的书籍，对从事移动通信工作或研究的人员提供参考和帮助。(introduced mobile communications gsm tenets of books, right to engage in mobile communications work or research personnel with information and help.)

仿真实现了关于认知无线电中合作频谱检测的性能分析(Simulation to achieve the performance of cooperative spectrum sensing in cognitive radio)