Est_Chirps.m

this code simulate pure aloha .

实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀；接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并，空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100，每个子载波传输66个符号，每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM communication system based on STBC under different SNR is realized. The transmitter includes baseband modulation, space-time coding, pilot insertion, IFFT, serial-parallel combination and adding cyclic prefix; the receiver includes removing cyclic prefix, extracting pilot estimation channel, FFT operation, parallel-serial combination, space-time decoding, etc. The complex orthogonal space-time coding matrix is used in QPSK and space time coding in 4*3. The number of OFDM subcarriers is 100, and each subcarrier transfers 66 symbols with 2 bits per symbol. IFFT is 512 symbols in length. The transmitting antenna is 3 receiving antennas, 2.)

TJA1050中文说明！！！！！！！！！(TJA1050 CHINESE！)

说明：  交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)

An e book on channel coding

Systemview动态系统仿真软件是为方便大家轻松的利用计算机作为工具，以实现设计和仿真工作。它特别适合于无线电话（GSM,CDMA,FDMA,TDMA)和无绳电话，寻呼，机和调制解调器与卫星通信（GPS,DBS,LEOS)设计。能够仿真( 等）DSP结构，进行各种时域和频域分析和谱分析。(Systemview dynamic system simulation software is easy for us to facilitate the use of computers as a tool to achieve the design and simulation work. It is especially suitable for wireless phone (GSM, CDMA, FDMA, TDMA) and cordless telephones, paging, machine and modem and satellite communication (GPS, DBS, LEOS) design. To simulation (and other) DSP structure, various time domain and frequency domain analysis and spectral analysis.)

这是在RIL层里面，实现打电话的功能的一个图形图示(This is the RIL layer inside, call the function to achieve a graphic icon)

说明：  The reference communication system for Orthogonal Time Frequency Space modulation

本程序利用改进的CHOW算法，仿真了自自适应OFDM系统的性能，并画出了SNR (This program makes use of improved CHOW algorithm simulates the performance of self-adaptive OFDM system, and draw the SNR)

4psk仿真作业 仿真4psk的性能曲线 误码率 和理想误比特率(4psk simulation)