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FPGA Implementation of DQPSK Modulation and Demodulation System(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2021年02期
Page:
34-39
Research Field:
信息与通信工程
Publishing date:

Info

Title:
FPGA Implementation of DQPSK Modulation and Demodulation System
Author(s):
Feng Xuefeng; Yu Yongzhi
School of information and communication engineering,Harbin Engineering University,Harbin 150001,China
Keywords:
DQPSK; FPGA; carrier synchronization; Gardner algorithm; differential encoding and decoding
PACS:
TN911.72
DOI:
10.3969/j.issn.1672-1292.2021.02.006
Abstract:
Modulation and demodulation is an indispensable part of digital communication system,and FPGA has been more and more widely used in digital communication system,so it is an inevitable trend to design modulation and demodulation system with FPGA. This paper mainly studies the relative phase shift keying to four modem implementation in FPGA. Based on designing such modules as the numerical control oscillator,fast Fourier pressure impulses estimation,carrier synchronization,bit synchronization in the modulation and demodulation system,this paper proposes a doppler frequency offset and phase fuzzy DQPSK(different quadrature phase shift keying)modem system design scheme,and in the developmental environment,Vivado are simulated. The simulation results show that the proposed scheme can accurately realize the baseband signal demodulation.

References:

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Last Update: 2021-06-30