상세정보
학술대회
Code Acquisition for Next Generation Mobile Broadband Satellite Services
- 발행일
- 200805
- 출처
- International Conference on Communications (ICC) 2008, pp.1871-1875
- 협약과제
- 08MR2800, 고속 이동체 인터넷 위성 무선 연동 기술개발, 이호진
- 초록
- This paper tackles the problem of time synchronization for the mobile extension of DVB-S2/RCS air interfaces. To increase robustness against other system interference, Direct Sequence Spread Spectrum (DS-SS) is selected, which calls for efficient code acquisition. Designed to operate jointly with frame synchronization, a novel high level control logic is proposed for code acquisition, along with robust detectors to cope with the large frequency uncertainty experienced at terminal start-up. The results show that the mean acquisition time is always limited to a few milliseconds, allowing fast acquisition even in the most challenging railway scenario. ©2008 IEEE.
- KSP 제안 키워드
- Code Acquisition, Control logic, DVB-S2, Direct-sequence(DS), Direct-sequence spread-spectrum(DSSS), Frame synchronization, Frequency uncertainty, Mean Acquisition Time, Next Generation Mobile Broadband(NGMB), Time synchronization, broadband satellite