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直接序列扩频原理仿真.用ELAINX公司SYSTEMVIEW调试.(Direct Sequence Spread Spectrum simulation theory. SYSTEMVIEW ELAINX companies with debugging.)

说明：  D2D通信中开环功控的演示，并对其进行编译(Demonstration of open-loop power control in D2D communication)

基于QR分解的宽度优先球形译码，即通常所说的K-best算法，适用于MIMO技术中的接收端信号检测。(Priority sphere decoding based on the width of the QR decomposition, commonly known as the K-best algorithm for the receiver signal detection in MIMO technology.)

说明：  可直接函数调用，根据Alamouti原始论文编写，双发双收。支持BPSK、QPSK、16QAM仿真的即时结果输出。(It can be called directly. It is written according to the original paper of Alamouti, with double sending and double receiving. Support real-time result output of BPSK, QPSK and 16QAM simulation.)

ultrasonic curcit amjadmftah@hotmail.com

基于matlab平台的LDPC编码译码仿真，很实用(LDPC coding and decoding simulation based on MATLAB platform which is really usefull.)

说明：  MATLAB 子空间语音增强，输入一个wav，生成一个增强语音wav(Matlab subspace speech enhancement, input a WAV, generate an enhanced voice wav)

M-PSk(M=2,4,8)-grayencoded, in AWGN channel,plot BER and SER, compare it with theorical results

opnet与matlab联调的步骤，过程详细，使用方便(Steps of OPNET and MATLAB debugging, detailed process, easy to use)

生成常见的混沌映射，用于混沌扩频码的设计。应用三种量化方法，比特量化、门限量化以及模2量化。重点计算其相关性能，自相关以及互相关，得到相关图像。计算序列的游程、平衡度。(To generate common chaos maps and use them to design the chaotic spreading sequences. We applied three kinds of quantization methods with bit queantization, threshold quantization and mod 2 quantization. We emphasized on the calculating the correlation performance on auto-corrrelation and cross-correlation and plotted their images.)