yidongtongxin

音频信号通过LM386放大，包括四元数的各种计算,D-S证据理论数据融合。( LM386 audio signal amplification, Including quaternion various calculations, D-S evidence theory data fusion.)

OFDM通信系统抗多径衰落干扰研究,顺便求OFDM系统中关于频谱偏移的估计与补偿的，(OFDM communication system of anti-multipath fading interference studies, the way for OFDM systems on the spectrum offset estimation and compensation,)

(ebook pdf) Hacking Cisco Routers

对瑞利信道下误码率的仿真分析,适合入门后的通信类学生学习(Rayleigh channel under BER simulation analysis)

本书描述了4G LTE / 5G NR 无线接入技术。(This book describes LTE, developed in 3GPP and providing true fourth-generation (4G) broadband mobile access, as well as the new radio-access technology 3GPP is currently working on. Together, these two technologies will provide 5G wireless access.)

我对于监控电源做的一些通讯协议，modbus rtu协议(I do monitor power communication protocol, modbus rtu protocol)

说明：  亲测好用的基本的自适应波束形成，LMS和RLS，可以在此基础上改进(Adaptive beamforming, LMS and RLS)

说明：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 (On the wireless channel of the Doppler spectrum, please answer the following questions: (1) In some radio channels, the Doppler frequency shift will cause the output signal of the wireless channel aliasing. Please describe the aliasing produced a variety of reasons (2) wireless channel in the Doppler spectrum has a classical spectrum (classic spectrum), please explain the mechanism of produce such spectral shape (3), please use the Simulink tool to write code ( S-Function mode), resulting in a single-path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And requested the answer: that they used computer-generated classical spectrum is the right possible way.)

Channel estimation for a MIMO-OFDM system for AWGN channel estimation technique Cyclic prefix length

一个事件提醒程序,类似于手机中的事件提醒(An event to remind the procedure, similar to events in the mobile phone to remind)