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Journal Article A Cooperative Transmit Diversity Scheme for Mobile Satellite Broadcasting Systems
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Authors
Do-Seob Ahn, Sooyoung Kim, Hee Wook Kim, Dong-Chul Park
Issue Date
2010-09
Citation
International Journal of Satellite Communications and Networking, v.28, no.5-6, pp.352-368
ISSN
1542-0973
Publisher
John Wiley & Sons
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/sat.967
Project Code
10MR2500, Development of Satellite Radio Interface Technology for IMT-Advanced, Ku Bon Jun
Abstract
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 Keywords
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