상세정보
학술지
Performance Enhancement in Future Mobile Satellite Broadcasting Services
- 발행일
- 200807
- 출처
- IEEE Communications Magazine, v.46 no.7, pp.118-124
- ISSN
- 0163-6804
- 출판사
- IEEE
- 협약과제
- 07MR3100, 위성 IMT2000+ 기술 개발, 안도섭
- 초록
- Recently, multimedia broadcast and multicast services have started to outpace simple data unicast services. A hybrid satellite-terrestrial network can provide a cooperative system in such a way as to provide high-quality seamless MBMS effectively. In this article we discuss two promising techniques that can improve the performance of a mobile satellite broadcasting system with HSTN. The objective of the first technique is to obtain diversity gain from independent signal paths; this can be achieved by using the space-time coding technique jointly operated on both the satellite and terrestrial repeaters. The goal of the second scheme is to obtain power gain by using a layered channel coding scheme with which a user terminal adapts to the channel condition. We demonstrate various simulation results for both schemes on the prescribed network structure, and the results show substantial improvements in performance. © 2008 IEEE.
- KSP 제안 키워드
- Broadcast and multicast services(BCMCS), Broadcasting system, Channel Coding, Cooperative system, Diversity gain, High-quality, Mobile satellite, Multimedia broadcast and multicast, Power gain, Satellite Broadcasting, Space time(ST)