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Exploiting statisti...
Exploiting statistical and outdated CSI in multiuser downlink transmission
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- Jin, S. (författare)
- Southeast University
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- Wang, J. (författare)
- Southeast University
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- Matthaiou, Michail, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gao, X. (författare)
- Southeast University
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(creator_code:org_t)
- ISBN 9781467358293
- 2012
- 2012
- Engelska.
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Ingår i: International Conference on Wireless Communications and Signal Processing, WCSP 2012; Huangshan; China; 25 October 2012 through 27 October 2012. - 9781467358293
- Relaterad länk:
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http://publications.... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- In this paper, we propose a multiuser downlink transmission scheme, which exploits both the statistical and outdated channel state information (CSI) at the transmitter. The proposed scheme extends the outdated CSI-aided scheme, first introduced by Maddah-Ali and Tse in [1] (denoted as MAT), by sending symbols demanded by a user along its statistical eigenmodes, instead of directly sending the symbols through separate antennas, and we refer to it as statistical eigenmode-MAT (SE-MAT). Considering zero-forcing receiver, we explicitly prove that the proposed SE-MAT scheme can achieve a higher ergodic sum-rate compared to the original MAT scheme, under different correlation conditions. Moreover, a user selection method which selects statistically orthogonal users for the SE-MAT transmission is proposed to further improve the system performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
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- kon (ämneskategori)
- ref (ämneskategori)
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