WiMAX的OFDM调制的MATLAB代码的…

qpsk调制在瑞利信道中的性能仿真，以及各个阶段信号的星座图仿真-qpsk modulation performance in Rayleigh channel simulation, as well as the various stages of signal constellation simulation

matlab 编写的各种ofdm信道估计的算法-Matlab prepared by the various ofdm channel estimation algorithm

通信协议在串口通信编程中的实现，就是如何处理数据包，即发送时如何根据通信协议对数据进行打包，接收时如何根据协议对接收到的数据信息拆包，并取出自己想要的数据信息。-通 协 诖 通 疟械 实 未 莅 时 胃 通 协 萁 写 时 胃协 越盏 息 取 约 要 息

TOP PORT (USB) 调试接口说明 本接口是利用PL-2303HX的USB转RS232的接口芯片设计实现了一个TTL(5V)的RS232串口，并且利用了PL-2303HX的2个GPIO口软件模拟了一个低速的I2C总线.该接口由USB接口提供5V电压，可自带2Kbit(24C02)数据备份EEPROM (单独读写通道,不占用I2C总线地址)。并可对外提供小于250mA的5V电压。尤其适合WIN-XP以后的没有并口和串口笔记本电脑。整机成本不到￥20RMB。 -TOP PORT (USB) interface debugging of this interface is the use of PL-2303HX the USB to RS232 interface chip design to achieve a TTL (5V) of the RS232 serial port, and use of PL-2303HX the two GPIO port software simulation of a low-speed I2C bus. The interface from the USB interface to provide 5V voltage, can bring their own 2Kbit (24C02) data backup EEPROM (separate read and write access, do not occupy I2C bus address). And may provide less than 250mA of 5V voltage. WIN-XP is particularly suitable for subsequent parallel and serial no notebooks. Machine costs less than ￥ 20RMB.

一个串口通信控制程序，用于PC机间通信或者PC机与PLC通信-A serial communication control program for communication between PC, or PC, and PLC communication

A simple Octave script where a BPSK modulated signal is transmitted on the 52 used subcarriers, may be used for understanding generation of an OFDM signal. The script is loosely based on 802.11a specification.

WCDMA移动通信系统中F9完整性算法的VC++实现程序-WCDMA mobile communication systems F9 integrity algorithm VC++ Realize procedures

VC++的USB接口编程源代码,完整的源代码。很不错的-VC++ The USB interface programming source code, complete source code. Very good

ISD1420为美国ISD公司出品的优质单片语音录放电路，由振荡器、语音存储单元、前置放大器、自动增 益控制电路、抗干扰滤波器、输出放大器组成。一个最小的录放系统仅由一个麦克风、一个喇叭、两个按钮、一 个电源、少数电阻电容组成。录音内容存入永久存储单元，提供零功率信息存储，这个独一无二的方法是借助于 美国ISD公司的专利――直接模拟存储技术（DAST TM）实现的。利用它，语音和音频信号被直接存储，以其原 本的模拟形式进入EEPROM存储器。直接模拟存储允许使用一种单片固体电路方法完成其原本语音的再现。不 仅语音质量优胜，而且断电语音保护。-err

本程序对标准DCF算法进行仿真，然后提出提高无线接入点通信能力的DCF改进算法，并编写仿真程序。仿真结果证明改进算法可以大幅度提高网络整体性能。 -This procedure of standard DCF algorithm simulation, and then put forward to improve the communication capabilities of wireless access points, DCF improved algorithm and the preparation of simulation program. Simulation results show the improved algorithm can significantly improve the network overall performance.