Performance Analysis of the Satellite High Speed link applying the Encryption

암호화를 적용한 위성 고속링크의 성능 분석

  • 황란미 (충북대학교 전파통신공학과소속 스마트무선통신연구실) ;
  • 정원호 (충북대학교 전파통신공학과소속 스마트무선통신연구실) ;
  • 여봉구 (충북대학교 전파통신공학과소속 스마트무선통신연구실) ;
  • 김승우 (충북대학교 전파통신공학과소속 스마트무선통신연구실) ;
  • 김기홍 (한국전자통신연구원 부설연구소) ;
  • 박상현 (한국전자통신연구원 부설연구소) ;
  • 양상운 (한국전자통신연구원 부설연구소) ;
  • 임정석 (한국전자통신연구원 부설연구소) ;
  • 김경석 (충북대학교 전파통신공학과소속 스마트무선통신연구실)
  • Received : 2015.10.19
  • Accepted : 2015.12.24
  • Published : 2015.12.31

Abstract

Satellite communication is high-speed large-capacity transmission in such a manner as to communicate with satellites in the chamber, and there is a wide area communication, but is not the security of the information. To compensate for this, AES encryption was applied to the CTR and CBC mode. Also, Blockage channel using a Markov chain to determine the impact caused by obstacles such as trees or buildings between the transmitter and the receiver was composed of Urban and Open Environment. The results of analyzing the performance of satellite communications over a high-speed link-based simulation, If applying encryption, performance of security is complementary but performance of the BER was aggravated and In the Open Environment fewer obstacles confirmed the BER performance is improved than the Urban Environment many obstacles.

위성통신은 상공에 있는 인공위성으로 통신하는 방식으로 고속 대용량 전송이 가능하며, 통신 구역이 넓다는 장점이 있는 반면 정보의 보안성이 없다는 단점이 있다. 이를 보완하기 위해 AES 암호화를 CTR과 CBC 모드를 적용하였다. 또한, 송신기와 수신기 사이에 나무나 건물 등의 장애물로 인해 발생하는 영향을 알아보기 위해 Markov chain을 이용하여 Blockage channel을 Urban과 Open 환경으로 구성하였다. 위성통신 고속링크 기반의 시뮬레이션을 통해 성능을 분석해 본 결과, 암호화를 적용한 경우 보안성은 보완되나 BER의 성능이 악화됨을 보였고, 장애물이 적은 Open 환경에서 장애물이 많은 Urban 환경보다 BER 성능이 향상됨을 확인하였다.

Keywords

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