QAM_modu_and_demodu

说明：  中兴h608b备份文件，usb口恢复超级管理员帐号(ZTE h608b backup file, usb super-administrator account to restore the mouth)

实现20m双绞线有线通讯，一端控制另一端小灯亮暗，反过来，一端发送字符，另一端显示浮点数(Realize 20m twisted-pair cable communication, one end controls the light of the other end, conversely, one end sends characters, the other end shows floating-point numbers.)

带语音识别的SIP-HMP程序, 可以实现ASR和TTS(sip hmp asr tts demo)

modbus 详细解说，协议文档。。。,包括了function。。。(modbus detailed explanation of the protocol documentation. . .)

说明：  详述LDPC码，有DVB_S2中LDPC编解码分析等以及KDH文档。(LDPC code in detail, there are DVB_S2 in the analysis of LDPC codec and KDH document.)

这是一个通信的Nakagami算法，理论值和仿真结果全都有，希望对大家有帮助。(This is a Nakagami algorithm for communication. Both theoretical and simulation results are available. I hope it will be helpful to you all.)

OFDM系统包括OFDM系统的调制解调，IFFT及FFT变换，保护间隔的加入对系统性能的改善，以及多径干扰、高速移动对系统误码率的影响。(The OFDM system includes modulation and demodulation of the OFDM system, IFFT and FFT transformation, the improvement of the protection interval to the system performance, and the influence of multipath interference and high-speed mobile on the system BER.)

说明：  能够有效在MIMO通信中进行ZF和MMSE预编码(Effective precoding of ZF and MMSE)

ModBus水质分析仪CRC计算的接口STM32F2实现，此应用适用于市面大部分Modbus水质协议的CRC校验(ModBus water quality analyzer CRC calculation of the interface STM32F2 implementation, this application is applicable to most of the market Modbus water quality agreement CRC calibration)

验证可用，MinkowskiMethod算法 ,计算一维光子晶体的透射特性和反射特性。( Verification is available, MinkowskiMethod algorithm, Calculated transmission characteristics and reflection characteristics of the one-dimensional photonic crystals.)