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The Journal of The Korea Institute of Intelligent Transport Systems Vol.9 No.1 pp.42-48
MBOK 확산 스펙트럼 기반의 지상파 DMB 워터마킹 성능 향상 기법 연구
A study on the Performance Improvement Technique for Terrestrial DMB Watermarking based on MBOK Spread Spectrum
Abstract
In this paper, we proposed analysis performance improvement technique for T-DMB watermarking based on MBOK spread spectrum. By applying the proposed scheme to T-DMB system, it allows additional data transmission and improves spectral efficiency of data transmission through watermarking spreading code. Using MBOK spread spectrum technique, data rate improved 2m-times existing direct sequence spread spectrum. However, since hardware complexity increase as the value of m becomes large, the method should be used with optimal situation. We analyze T-DMB watermarking techniques performance with MBOK spread spectrum and averaging. As a result, we confirm DER performance of MBOK spread spectrum scheme and it is shown system performance is improved as the number of averaging increases. The results of the paper can be applied to wireless multimedia digital broadcasting system.
