麻烦翻译成英文摘要~急用~

发布网友发布时间：2022-05-06 12:32

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热心网友时间：2022-06-30 13:27

With the development of society, the constant development of economy, the society is already highly information, information and communication has become a modern society's "lifeline". As for communications technology, communication and the quality of it appears very key, communication is how to guarantee the basic task of the correctness of long-distance transmission information, in this respect digital communication system has a congenital advantage, for analog communication systems, as long as there is a little interference will make the information transmitted errors, yet for digital communication system, because the transmission is discrete digital signals, be noise as long as nothing more than threshold after, the receiver can completely correct judgment outgoing transmission of information. It is out of this advantage, simulation of communication system has been graally replaced by digital communication system. In practice, most channel because have band-pass characteristics and cannot be transmitted directly baseband signal, this is because digital baseband signal often have rich low-frequency components. Therefore must use digital baseband signal on carrier for molation, the characteristics of which a signal and channel matching. The so-called molation, a digital baseband signal control, the digital baseband signal molated signal process already tuning into. Instead, at the receiving end already adjustable signal rective into the process of digital baseband signal is demolation. Commonly used molation mode have ASK (removed picture keying), FSK (frequency shift keying), PSK (phase shifting keying), this research is to achieve the microcontroller FSK of molation and demolation, at the same time use the proteus software to realize simulation and analysis, by using simulation visualization of the means to accomplish achieve the purpose of demolation.

Keywords: digital communication FSK FSK signal microcontroller proteus