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On the Performance of Multiuser MIMO Systems in WCDMA/HSDPA: Beamforming, Feedback and User Diversity

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Authors
Kim, Sungjin; Kim, Hojin; Park, Chang Soon; Lee, Kwang Bok
Issue Date
2006-08
Publisher
Institute of Electronics, Information and Communication Engineers (IEICE)
Citation
IEICE Trans. Commun., vol. E98-B, no. 8, pp. 2161-2169, Aug. 2006
Keywords
multiuserMIMOSTMAWCDMAHSDPA
Description
This paper was presednted in part at PIMRC 2004.
Abstract
Several multiple-input multiple-output (MIMO) techniques have been proposed for 3GPP WCDMA/HSDPA systems and several performance evaluation for the comparison purpose are in progess. Most MIMO candidates in HSDPA have been generally designed for point-to-point communication, which means that a single-user throughput is of their major concern. However, multiple users and user scheduling need to be considered in wireless packet transmission, so as to maximize system throughput. In this paper we propose an effective user scheduling technique in both space and time domains that offers three main benefits, which are the spatial-beamforming, uplink feedback signaling, and advanced receivers. Furthermore, user scheduling is combined with modified successive interference cancellation (SIC) reception, which allocates all transmit antennas to the best user with SIC or each transmit antenna to different users with minimum mean squared-error (MMSE). Simulation results show that the proposed scheme has higher user diversity gain thatn other MIMO candidates in terms of achievable throughput.
ISSN
0916-8516
Language
English
URI
http://search.ieice.org/bin/summary.php?id=e89-b_8_2161&category=B

http://hdl.handle.net/10371/7089
DOI
https://doi.org/10.1093/ietcom/e89-b.8.2161
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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