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학술대회 Code Acquisition for Next Generation Mobile Broadband Satellite Services
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A. Vanelli-Coralli, G.E. Corazza, C. Palestini, R. Pedone, M. Villanti, 이호진, 김판수
International Conference on Communications (ICC) 2008, pp.1871-1875
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