nRF2401

通过设置串口的波特率、起始位、检验位等参数，进行FPGA的串口通讯(By setting the baud rate, the starting bit, the test bit and other parameters of the serial port, the serial communication of FPGA is carried out)

LDPC codes 4girth check

说明：  主动锁模光纤激光器，利用强度调制器在腔内产生周期性的损耗调制，产生了超短脉冲。(Active mode-locked fiber)

卡尔曼滤波器介绍,个人感觉比较好的资料。(kalman (explain in detail) )

说明：  快变信道估计设计与实现 oFDM系统的论述；快变信道下OFDM系统仿真设计；快变信道下的OFDM同步；快变信道下OFDM系统的信道估计；完成毕业设计论文。(Discussions on the design and implementation of fast-varying channel estimation; simulation design of OFDM system in fast-varying channel; synchronization of OFDM system in fast-varying channel; channel estimation of OFDM system in fast-varying channel; completion of graduation thesis.)

说明：  QPSK调制解调源文件 QPSK调制解调源文件(QPSK demodulator source QPSK modulation and demodulation source)

this is simply a report on the fading channel on different modulation scheme

一份红外通讯的编码设计,已经经过实验，支持一对多。(Encoding of an infrared communication design, and after the experiment, to support one to many.)

说明：  运用近似熵算法对cpm信号进行调制识别，然后计算识别率。(The approximate entropy algorithm is used to recognize the modulation of CPM signal, and then the recognition rate is calculated.)

NFC协议第三部分，描述了NFC tag 2 通讯协议(NFC protocol third part describes the communication protocol NFC tag 3)