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나남웅,백선혜,홍성훈 전남대학교 전자통신기술연구소 2002 전자통신기술논문지 Vol.5 No.1
The Eureka-147 Digital Audio Broadcasting (DAB) system is well adapted to the requirements of mobile broadcasting services including high-quality audio, program associated data and other multimedia data. In this paper, we design the transport frame structures for the mobile multimedia services by using the configuration of the Eureka-147 DAB multiplex and MPEG system specifications, and then compare their performances in terms of functionality and overhead. Espeially, we suggest the effective transport structure, which is improved in the efficiency of media multiplexing architecture, by removing the functionally overlapped parts between DAB and MPEG systems. In addition, we evaluate the transmission environments of various DAB data channels and demonstrate the transmission error effects on the low bitrate video stream.
AVC 잉여슬라이스를 이용한 DMB 비디오 스트림의 오류내성부호화
홍성훈 ( Sung-hoon Hong ),백선혜 ( Sun-hye Baek ),나남웅 ( Nam-woong Na ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.1
In the case of terrestrial DMB(Digital Multimedia Broadcasting) system that offers mobile multimedia broadcasting services, transmission error must be considered. Although DMB transmission system provides the error protection functions of convolution coding and Reed-Solomon (204,188,t=8) coding, additional error resilience video coding methods are needed to satisfy the requirement of BER lower than 10-8. In this thesis, we propose and evaluate effective error resilience coding schemes using the MPEG-4 redundant slice for MPEG-4 video services in the DMB environment. In this scheme, we analyze the drift error caused by transmission error based on the random noise concept and the redundant slice selection algorithm that selects the most influential slice in the view of the drift error increment.