상세정보
학술지
A Cooperative Transmit Diversity Scheme for Mobile Satellite Broadcasting Systems
- 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
- 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.
- KSP 제안 키워드
- Block codes, Broadcasting system, Channel Quality Information, Coding Gain, Diversity gain, Diversity scheme, Diversity technique, Maximal-ratio-combining(MRC), Mobile satellite, Power gain, Return link