Modulation and Demodulation of QPSK Communication System Based on Matlab

DOI

10.2991/lemcs-15.2015.351How to use a DOI?

Keywords

QPSK Matlab Modulation Dual-bit code

Abstract

Currently, multiple modulation schemes based on QPSK are applied more and more widely. They are involved in digital microwave communication system, digital satellite communication system, broadband access, mobile communication and cable television system. QPSK is quarternary phase-shift keying. It characterizes digital information input through differences of four different phases of carrier. It specifies four phases of carrier. One dual-bit code element is corresponding to two binary information bits. They can be regarded as the synthesis of two 2PSK signals. In QPSK, each modulation can transmit two information bits. They are transferred through four phases of carrier. This design realizes modulation and demodulation of QPSK on Matlab platform. It then verifies relevant theoretical knowledge of QPSK systematically.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaoling Hu
PY  - 2015/07
DA  - 2015/07
TI  - Modulation and Demodulation of QPSK Communication System Based on Matlab
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 1729
EP  - 1732
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.351
DO  - 10.2991/lemcs-15.2015.351
ID  - Hu2015/07
ER  -