Computer Science ›› 2020, Vol. 47 ›› Issue (4): 226-232.doi: 10.11896/jsjkx.190700210

• Computer Network • Previous Articles     Next Articles

DVB-S2 Signal Receiving and Analysis Based on Cognitive Radio

TIAN Miao-miao, WANG Zu-lin, XU Mai   

  1. School of Electronic and Information Engineering,Beihang University,Beijing 100191,China
  • Received:2019-07-30 Online:2020-04-15 Published:2020-04-15
  • Contact: WANG Zu-lin,born in 1965,Ph.D,professor,Ph.D supervisor.His main research interests include image proces-sing,communication network and electronic countermeasur.
  • About author:TIAN Miao-miao,born in 1995,postgraduate.Her main research interests include satellite communication and di-gital signal processing
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (61971025)

Abstract: DVB-S2 protocol is the second generation of digital television satellite broadcasting protocol,which has been widely used all over the world because of its outstanding signal transmission performance.The existing DVB-S2 signal reception mostly uses standard commercial equipment,which is not convenient for analysis of each module of signal reception.Therefore,this paper carried out the use of cognitive radio USRP X310 equipment and Matlab digital algorithms to realize the reception and analysis final transmission effect which affected by relevant algorithm parameters.This work can provide reliable design guidance for deeper research on signal protocol,subsequent DVB-S2 signal generation and communication countermeasure.Based on DVB-S2 protocol,this paper designed a complete simulation and realization for the reception and analysis system of digital satellite television signals.In order to achieve maximum transparency of the communication protocol,this paper only used cognitive radio equipment to amplify and sample original analog signals,and the rest is completed by digital signal processing algorithms on the software platform.The hardware device to receive and sample DVB-S2 analog signals is a cognitive radio equipment USRP X310 and the software platform for all the digital signal process is MATLAB platform.This paper discussed the details of hardware configuration,digital signal processing framework and theories and implementations of some key modules.The key modules are symbol synchronization,physical layer frame head detection and analysis,and carrier synchronization.In the experimental part,this paper took a specific television program on Ku band of Asian Satellite 5 as an example to illustrate the whole DVB-S2 signal process.Finally,original data transmission stream is obtained and the video and audio of the program can be successfully broadcast.

Key words: Cognitive radio, DVB-S2 protocol, Satellite communication

CLC Number: 

  • TN927
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