OFDM_Modulation_o

One issue with underwater sensors is how to efficiently transfer large amounts of data collected by the node to an interrogating platform such as an underwater vehicle. It is often impractical to make a physical connection between the node and the vehicle which suggests an acoustic or optical wireless solution. For large amounts of data, the high bandwidth of underwater optical wireless is an advantage. A small, low-cost platform to demonstrate the potential of an optical wireless communications interface for underwater sensor nodes is demonstrated. To enhance the reliability and robustness of the optical wireless communication digital signal processing and error correction techniques are used. The system was tested in 3 and 7.7 meter tanks at 5 Mbps with the turbidity of the water controlled by the addition of Maalox.

设计了差分编码移相键控(2DPSK)调制解调系统的工作流程图,并利用 Matlab 软件对该系统的动态进行了模拟仿真。利用仿真的结果,从基带信号的波形图可以衡量数字信号的传输质量 由系统的输入和输出波形图可以看出,仿真实验良好 。(Design of a differential phase shift keying encoding (2DPSK) modulation and demodulation system working flow chart of the system using Matlab software to simulate the dynamics simulation. Using simulation results, from the baseband signal waveform can be measured digital signal transmission quality by the system' s input and output waveforms can be seen that simulation is good.)

说明：  DL/T860系列文档完整版，IEC61850通讯模型(DL / T860 series document complete version, IEC61850 communication model)

简单的OOK调制程序，很不错的哦，大家来吧！(Good OOK modulator program)

利用维特比算法解调GMSK信号 维特比算法的一个用处(Viterbi algorithm using GMSK signal demodulation Viterbi algorithm is a useful)

说明：  stm32实现ook调制，调制通过，误码率较高(The realization of ook modulation by stm32)

说明：  在n个城市建设通信网络，只需架设n-1条线路即可至少包含10个城市，城市数n由键盘录入，城市坐标由随机函数产生小于100的整数(In the construction of communication network in n cities, only n-1 lines are needed to include at least 10 cities. The number of cities n is input by keyboard, and the coordinates of cities are generated by random functions into integers less than 100.)

一系列包含串口、Modem、收发传真、终端仿真等方面的编程例子( A series of contains aspect the and so on string mouth, Modem, receiving and dispatching facsimile, terminal simulation programming example )

多功能电能表通信协议_645-2007.pdf(Multi-function watt-hour meter communication protocol _645-2007.pdf)

实现电力线通信信道建模及其基于OFDM调制系统环境下仿真。(Power line communication channel modeling and simulation of OFDM system)