Abstract
According to the traditional communication understanding is the
information transmission, information transmission is inseparable from its
transmission tools, communication system emerge as the times require, we
have designed this course is aim to modem communication system
simulation. Of course, in communication system design and development
process, the communication system software simulation has become an
essential part of it. At present, the electronic design automation EDA
(Electronic Design Automatic) has become the main trend of communication
system design. In order to make the complex design process more efficient
and convenient, making the analysis and design of the time and costs is
required. U.S. Elanix company introduced PC-based Windows platform
SystemView dynamic system simulation software, is a more popular,
excellent simulation software.
It is a signal-level system simulation software, and communication
systems primarily for circuit, design, simulation, to meet from the signal
processing, filter design, to complex communication system and other
requirements.
Typically, the modulation is divided into analog modulation and digital
modulation, analog modulation. Analog modulation methods are commonly
used AM modulation, DSB modulation, SSB modulation; digital modulation
methods are commonly used BFSK modulation. Spectrum can be modulated
used not only move, move the modulated signal spectrum to the desired
position, which will convert the modulated signal suitable for transmission or
to facilitated the channel multiplexed channels modulated signal, the
transmission on system and has a great impact. Modulation often determines
the performance of a communication system.
This paper uses the SystemView software to design AM and OOK
modulation and demodulation circuit, and through the analysis of the input
and output waveforms verify the correctness of the design circuit.
关键词：SystemView 软件，AM,OOK
