DSSS_CDMA_1

光通信中采用OFDM时，信号必须为非负实信号，因此通常采用DCO-OFDM或ACO-OFDM技术，此代码为ACO-OFDM(In VLC the signal has to be real and unipolar. Number of schemes in VLC are proposed in order to provide a real and unipolar signal like U-OFDM , Flip-OFDM , spectrally factorized pptical OFDM].)

optisystem7入门中文讲义（网络版）以及Demo(Introduction to Chinese optisystem7 notes (Online))

用不同颜色散点直观描述信号在星座图上概率分布，(Describe the distribution and probability of signals with different colors in the constellation diagram,)

说明：  基于OQPSK，高斯信道和瑞利信道的matlab仿真程序(Matlab simulation program based on OQPSK)

简单的聊天室，分为服务器和客户端，开发环境为vc6.0，自己答辩用的代码。(Simple chat rooms are divided into servers and clients.)

对通信多径分析的SIMULINK文件，可仿真多径、信道衰落等。(SIMULINK file communication multipath analysis, simulation multipath channel fading, etc.)

各种典型滤波器的设计与仿真,包括矩形窗、巴特莱特窗、汉宁窗、汉明窗和布莱克曼窗。(Typical filter design and simulated, including the rectangular window, Bartlett window, Hanning window, Hamming window and Blackman window.)

本程序是对V-BLAST系统及其检测算法的仿真，可采用BPSK,QPSK,16QAM,64QAM调制。检测算法为ML，MMSE,ZF,以及采用迫零的连续干扰消除检测算法。(This procedure is a V-BLAST system and its detection algorithm of the simulation, using BPSK, QPSK, 16QAM, 64QAM modulation. Detection algorithm for the ML, MMSE, ZF, and the introduction of zero-forcing successive interference cancellation detection algorithm.)

说明：  Goertzel算法是DTMF信号检测的核心,它利用二极点的IIR滤波器计算离散傅立叶变换值,快速有效的提取输入信号的频谱(Goertzel algorithm is the core of DTMF signal detection. It uses the two-pole IIR filter to calculate the discrete Fourier transform value, and extracts the spectrum of input signal quickly and effectively.)

实现串口通信 可以收发数据 可以是数字也可以是ASCII(Serial communication)