Research of All Digital Demodulation Technology for QPSK
Authors
Huiying Zhang, Hongzuo Li, Ting Zhao, Ruijing Xie
Corresponding Author
Huiying Zhang
Available Online April 2015.
- 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/).
Cite this article
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 -