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학술지 A Cooperative Transmit Diversity Scheme for Mobile Satellite Broadcasting Systems
Cited 28 time in scopus Download 1 time Share share facebook twitter linkedin kakaostory
저자
안도섭, 김수영, 김희욱, 박동철
발행일
201009
출처
International Journal of Satellite Communications and Networking, v.28 no.5-6, pp.352-368
ISSN
1542-0973
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/sat.967
협약과제
10MR2500, IMT-Advanced 위성접속 기술개발(표준화연계), 구본준
초록
In this study, we propose an efficient cooperative diversity scheme for mobile satellite multimedia broadcasting systems. The proposed scheme is a transmit diversity technique for adapting different channel environments, and thus, no channel quality information from the return link is needed. In the proposed scheme, we utilize spacetime block codes and rate-compatible turbo codes to achieve diversity gains and additional coding gains, respectively. The satellite and several repeaters on the ground cooperate to send the encoded signals, enabling the user terminal to realize diversity gain. The simulation results demonstrate that the proposed scheme can provide greatly improved performance. The simulation results in this study show that we can achieve about a 0.8 and 2.3-dB power gain by using the proposed cooperative diversity scheme without and with maximal ratio combining schemes, respectively, compared with the conventional scheme even, with a higher code rate. 2010 John Wiley & Sons, Ltd. This paper proposes an efficient cooperative diversity scheme for mobile satellite multimedia broadcasting systems. In the proposed scheme, we utilize space-time block codes and rate-compatible turbo codes to achieve diversity gains and additional coding gains, respectively. The satellite and several repeaters on the ground cooperate to send the encoded signals, enabling the user terminal to realize diversity gain. The simulation results demostrate that the proposed scheme can provide greatly improved performance. © 2010 John Wiley & Sons, Ltd.
키워드
Mobile satellite systems, Rate compatible codes, Spacetime block coding, Transmit diversity, Turbo codes
KSP 제안 키워드
Block codes, Broadcasting system, Channel Quality Information, Coding Gain, Diversity gain, Diversity scheme, Diversity technique, Maximal-ratio-combining(MRC), Power gain, Rate compatible codes, Return link