QPSK_RAYLEIGH

一种降低正交频分复用信号峰均功率比的方法--压缩扩展变换()

OFDM系统的自适应功率和比特分配算法，实现系统资源的自适应分配（4)－－原创(adaptive allocation for OFDM system)

无线传感器网络leach协议的matlab仿真程序(Wireless sensor networks matlab simulation program)

DNP3通讯报文解析工具，由于查看理解DNP通讯报文(DNP3 Communications Message Parsing Tool, Due to Viewing and Understanding DNP Communications Messages)

说明：  载波相位平滑伪距，针对伪距的异常情况，利用载波相位进行平滑处理(Carrier phase smoothing pseudo-distance)

udp协议介绍 是一个无连接的协议，快速等(udp protocol described is a connectionless protocol, fast, etc.)

1）设计Butterworth型音频抗混叠滤波器； 2）参数： 下通带频率300Hz；上通带频率3400Hz； 下阻带频率280Hz；上阻带频率3600Hz； 通带最大衰减0.3dB； 阻带最小衰减40dB； 3）采用一低通滤波器和一高通滤波器级联； 4）分别确定LPF和HPF的性能指标； 5）求出两滤波器的系统函数和频率响应，并画出其幅频特性曲线； 6）求整个滤波器的系统函数和频率响应，并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)

利用ADM4017实现空调系统压力的采集（蒸发压力和冷凝压力) ,利用ADAM4018实现热电偶的温度采集。包含了曲线显示，数据存储功能，自定义温度标签功能。(this applicaion is used to get the temperature and pressure of the HVAC system by ADAM4017 and ADAM4018. include the cure print, the data storage and user defined label for 8 channels temperature.)

基于MIMO系统原理的stcb，空时编码仿真程序(MIMO stcb)

说明：  MATLAB代码，产生GNSS导航信号BOC调制的相关频谱特性(The generate of BOC signal AND ITS PDF)