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Modulator and Demodulator of Phase-continuous π/4DQPSK Based on FPGA(PDF)

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

Issue:
2004年03期
Page:
41-44
Research Field:
Publishing date:

Info

Title:
Modulator and Demodulator of Phase-continuous π/4DQPSK Based on FPGA
Author(s):
KE Wei;  YIN Kuixi
School of Physical Science and Technology, Nanjing Normal University, Nanjing 210097, China
Keywords:
phase-continuousπ/ 4DQPSK;  FPGA ;  modulator ;  demodulator
PACS:
TN76
DOI:
-
Abstract:
The phase-continuousπ/ 4DQPSKmodulator and demodulator , which are based on the large2scale FPGA , are intro-duced in this paper. The majority of the functions in the modulator and the demodulator are realized by FPGA resource , which can not only enhance the system’s reliability , flexibility and integration , but also reduce its size. Because of the particular phase transformation in phase-continuousπ/ 4DQPSK, double-channel design is employed , generating transition-phase and main phase alternately. To control the sampling-time , the counter is used in the demodulator , which can ensure that the samples lo-cate in the main phase area. The experiment results have shown that the design is feasible.

References:

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Memo

Memo:
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Last Update: 2013-04-29