data n. 1.资料,材料〔此词系 datum 的复数。但 datum 罕用,一般即以 data 作为集合词,在口语中往往用单数动词;如系指一件资料,则说作 this data〕。 2.〔美国〕(观察所得的)事实,知识。 a data book 参考资料书。 gather data on ...收集…的资料[数据]。 The data is not enough to be convincing. 资料不足,尚难令人信服。
It not only considers the effect of frequency error and data modulation , but also realizes code synchronization and frame synchronization at the same time . all these research work will give a valuable reference to the design of the new communication systems 本文对扩频通信系统构成和原理,扩频序列设计与优选,扩频序列同步问题进行了研究,并进行了相应的仿真。
Ofdm ( orthogonal frequency division multiplexing ) is a multi - carrier data modulation technology . though the conception of ofdm was brought forward many years ago , it is only in recent years that people recognize it as an excellent way of high speed , bidirectional , wireless data communication 正交频分复用( ofdm )技术是一种多载波数据调制技术,虽然ofdm的概念已经存在了很长时间,但是直到最近随着多媒体业务的发展,它才被人们认识到是一种高速双向无线数据通信的良好方法。
In the end , a kind of completely opened remote digital access developing platform that faced to the network application is discussed in detail . because some standard data modulation protocols are bundled in it , a whole high - speed modem solution for the digital accessing system can be achieved in a single chip . and then the system has a very high - synthesized performance 本文还详细探讨了一种直接面向网络系统应用、完全开放的远程数字接入开发平台,该平台由于捆绑了一些标准的数据调制协议,可单片实现数字接入部分高速调制解调整体解决方案,具有较高的综合性能。
In this paper , a wireless data modulation system based on dsp / pci interface board are studied and implemented . based on the characteristic of wireless communication system , the paper chooses proper coding and modulation mode , completed the design and debug of dsp target board based on the pci slot of computer and realized data wireless transfer 本论文根据远程无线数据通信的特点,选择了合适的编码交织及调制方式,在研制了单片机控制无线数据调制器的基础上,独立完成了基于普通pc机的pci插槽的dsp目标板的设计与调试,最终实现了对数据的无线传输。
Since pico - satellite could already basically communicate with carrier wave , my major approach is to optimize the communicator ' s performance , to process the follow - up connect and charactization after data modulation , to present primary reliability design and simulation so as for the whole system to satisfy engineering needs 本人的主要工作就是在前人的基础上进一步优化通信机的性能指标,同时进行数据调制后的联试,并且进行初步的仿真和可靠性设计,使整个系统能满足工程化的要求。