sd模型

三菱通讯,VB源代码。经过全面测试。现与大家分享。(Mitsubishi communications VB source code. Have been fully tested. Now share with you.)

This program simulates the bit-error-rate (BER) performance of OSTBC with L=4 antennas over the frequency flat Rayleigh block fading channel The code is developed for real orthogonal design, code rate 1/2 modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.

主要介绍空中接口物理链路层的无线技术，共分三个部分，首先对主要接口和协议作 简单介绍和描述；然后分别介绍信道与帧；无线信道编码与交织以及LAPDm。(Mainly introduces Wireless technology of air interface in the physical link layer which is divided into three parts. first: a brief introduction and description of the main interfaces and protocols then:Road and frame and last radio channel coding and interleaving and LAPDm .)

实现对CDMA短消息承载数据的编码解码处理(To achieve the CDMA SMS bearer data encoding and decoding processing)

使用多路径信道进行数据的传输仿真（架设在已知信道中传输）(Data transmission using the multi-path channel simulation (mounted on a known channel transmission))

这是一个用VC编写的MSCOMM控件的注册安装示例工程源代码，对于单片机的上位机软件开发是一个不错的小工具(This is a prepared using VC control register MSCOMM sample project to install the source code for the MCU PC software development is a good gadget)

包含有数字通信课程实验大作业报告与代码。完成的OFDM的收发包含：1.卷积编码、2.自动增益控制、3.极大似然判决、4.QPSK收发、5.帧检测等，代码在MATLAB2016b环境下编译通过(It contains the report and code of the experiment assignment for the course of digital communication. The completed OFDM transceiver includes: 1. convolutional coding, 2. automatic gain control, 3. maximum likelihood decision, 4. QPSK transceiver, 5. frame detection, etc. The code is compiled and passed in MATLAB2016b environment.)

关于MIMO-OFDM的信号检测方法，ML检测(Signal detection method for MIMO-OFDM, ML detection)

信息经格雷码映射，进行QPSK调制并通过AWGN信道发射，在接收端进行QPSK解调，并统计误符号率和误码率。(Information on the Gray code mapping, QPSK modulation and emission through the AWGN channel, QPSK demodulator at the receiving end, and the statistical symbol error rate and bit error rate.)

说明：  cpofdm信道模型仿真，通过仿真得到cpofdm信道模型的复杂度和在各种信噪比下的误码率(Through the simulation of cpofdm channel model, the complexity of cpofdm channel model and the bit error rate under various SNR are obtained)