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학술지 Evaluation of Cooperative Diversity Techniques using STC for Future S-DMB Services
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김수영, 박운희, 김희욱, 안도섭
IEICE Transactions on Communications, v.E92-B no.11, pp.3345-3353
일본, 전자정보통신학회 (IEICE)
This paper presents an evaluation of various cooperative diversity techniques applied to future satellite digital multimedia broadcasting (S-DMB) systems. The increasing importance of hybrid and/or integrated satellite and terrestrial networks is associated with the utilization of spatial diversity techniques such as antenna diversity using spacetime coding. The space-time coding schemes can be expected to result in more diversity gain as the number of transmit antennas are increased. However, we cannot design a rate-1 scheme that achieves full diversity for more than two transmit antennas. To overcome this limitation, quasi-orthogonal schemes were proposed, at the expense of the decoder complexity and diversity gain. In this paper, we introduce an efficient quasi-orthogonal space time coding scheme, and evaluate various aspects associated with the application of the proposed scheme to satellite systems. The proposed scheme in this paper provides the full rate as well as maximum-likelihood decoding via simple linear detection. Copyright © 2009 The Institute of Electronics, Information and Communication Engineers.
KSP 제안 키워드
Antenna diversity, Digital multimedia broadcasting, Diversity gain, Diversity technique, Full diversity, Information and communication, Quasi-orthogonal, Satellite and terrestrial, Space time(ST), Spatial diversity(SD), coding scheme