ASK4

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。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions: (1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing; (2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape; (3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)

本文提出在数字移动通信中子带滤波器组处理可以提高不同阵元信号的相关性，从而能改善自适应阵列抑制码间干扰(ISI)和共信道干扰(CCI)的能力．在文[6]的基础上，本文研究了子带滤波器组在宽带自适应天线旁 瓣相消中的应用，对其原理进行了理论分析，提出了有效的子带处理方法．经研究表明，子带滤波器组处理能有效增加主、辅助天线信号的相关性，从而提高系统干扰相消比．而且适当的过采样能使系统干扰相消比进一步提高．计算机仿真结果和实测雷达数据处理结果证实了子带处理方法的有效性和理论分析的正确性．(err)

Debugging Program of Korea Optic New Integrated vehicle Radio High Frequency head KST-1111

室内可见光通信中通过使用均衡技术来提高马元速率(Indoor visible light communication by using equalization techniques to improve the rate of Ma Yuan)

汽车行业CAN通讯SAEJ1939标准英文版(Auto Industry CAN Communication SAEJ1939 Standard English Edition)

高斯一阶导数生成的UWB单脉冲信号，脉冲宽度为0.5ns(Gaussian first derivative monopulse generated UWB signal, pulse width of 0.5ns)

扩频通信系统的跳频 matalab源代码，源程序。(Spread spectrum communication system of frequency hopping matalab source code, the source program. )

说明：  利用动态链接库现LabVIEW与USB设备的数据通信(Is the use of dynamic-link library of LabVIEW and the USB data communication equipment)

This is book about bluetooth programming and other items. Is good for beginerss.

CDMA码分多址技术。包括指令编写说明和Q2358C型号CDMA的说明书(CDMA Code Division Multiple Access technology. Including the preparation of instructions and instruction manuals Q2358C CDMA models)