Research of All Digital Demodulation Technology for QPSK

DOI

10.2991/meic-15.2015.13How to use a DOI?

Keywords

QPSK; digital demodulation; carrier synchronization;symbol synchronization;FPGA

Abstract

The principle of QPSK modulation and demodulation is described and the detailed explanation and theoretical on DDC, carrier synchronization and bit synchronization principle is analyzed. A QPSK digital demodulation structure based on FPGA is proposed after detailed theoretical derivation for Costas loop carrier synchronization module.The entire system is completed on a single FPGA and use the Verilog programming language in Modelsim platform to simulate its function. Finally, a system test platform is built and the demodulated pattern is observed by an oscilloscope. The test result shows that the designed system can meet the basic requirements.

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  - Huiying Zhang
AU  - Hongzuo Li
AU  - Ting Zhao
AU  - Ruijing Xie
PY  - 2015/04
DA  - 2015/04
TI  - Research of All Digital Demodulation Technology for QPSK
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 50
EP  - 53
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.13
DO  - 10.2991/meic-15.2015.13
ID  - Zhang2015/04
ER  -