3gwireless

说明：  进行FDOA频差定位的程序，计算GDOP(Carry out FDOA frequency difference positioning program and calculate GDOP)

利用数据板卡进行数据采集，利用半满的方式将模拟量转换成数字量(Data card for data acquisition, the use of half-full way to convert analog into digital)

Channel estimation for a MIMO-OFDM system for AWGN channel estimation technique Cyclic prefix length

自己做的CRC16校验例子，输入16进制数据，数据之间用空格，得到校验字节(The CRC16 checksum own example, enter the hexadecimal data, with a space between the data check byte)

中文RFC文档，不用翻译，对大家学习很有帮助！(Chinese RFC documents, without translation, the right to study very helpful!)

说明：  实现了一个直接扩频系统，使用BPSK作为调制解调方法。并比较白噪声AWGN及瑞利衰落(rayleigh fading)环境下，误码率的影响。(There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented 4] The resulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file. 6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable. 7] Run the simulation. To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray >>semilogy([1:8],BER_awgn(1:8), g* ) hold on semilogy([1:8],BER_ray(1:8), -.b* ) hold on grid on )

一个串口通讯的源码，自定义的通讯协议，与切纸设备连接(A serial communications source, since the definition of communication protocols, and cutting equipment to connect)

说明：  51MODBUS从机程序源码希望对有用的人有用，，(51MODBUS,welcom to here,thank you very mouch.)

只是在闲暇时发现网络上面根本就没有完全公开或者使用方便的程序,(Is only found in your spare time on the network did not fully open or easy to use program,)

比较完整的OFDM的仿真模型和源码,有比较完整的设计思路,可供学习(Relatively complete OFDM simulation model and the source code, there is a complete design ideas, to learn from)