Research and Simulation of Digital Modulation
Technology in Communication System
Major: communication engineering
Student: Qin Kai Supervisor: Tang Quan
Abstract
In day-to-day life，communication is used to convey information. With the rapid
development of digital systems ， digital system for modem performance and the
technical requirements of increasingly high.
At the same time ， the development of computing technology ， simulation of
communication systems have become increasingly common，have gradually become
the design and analysis of today's main tool for communication systems.
In chapter 1, this paper introduces the composition of the communication system,
the use of MATLAB and Simulink module is established. The second chapter
in-depth analysis of the 2 ASK, 2 PSK, 2 FSK of demodulation principle theory
knowledge, be familiar with the theory, in the third chapter using MATLAB
programming and Simulink simulation and research on them. This design mainly
realizes 2 ASK, 2 PSK, 2 FSK demodulation process Simulink, and analyzes the
performance of their differences. The last chapter of digital modulation and
demodulation made a summary.
Key words： MATLAB modem 2ASK 2PSK 2FSK
