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Heekwang Lee, Dongyoung Kwon, Woohyun Seo, Sungsoo Park, Jemin Lee, Seungjoo Maeng, Jaeho Jeon and Daesik Hong, "User Group Selection Scheme for Lattice-Reduction-Aided Precoder in MIMO Broadcast Systems", PIMRC 2010, Sep. 2010
[IEEE PIMRC]
조회 74473
Status : | Presented |
---|---|
Date : | 2010-09 |
Title : | User Group Selection Scheme for Lattice-Reduction-Aided Precoder in MIMO Broadcast Systems |
Authors : | Heekwang Lee, Dongyoung Kwon, Woohyun Seo, Sungsoo Park, Jemin Lee, Seungjoo Maeng, Jaeho Jeon and Daesik Hong |
Conference : | PIMRC 2010 |
Abstract : | In multiple-input multiple-output (MIMO) broadcast channel, the lattice-reduction-aided (LRA) precoder is the modified zero-forcing beamforming (ZFBF) scheme which perturbs data symbols to reduce the transmit power. In this paper, we propose the optimal user group selection (UGS) scheme for the LRA-precoder to maximize the sum-rate in MIMO broadcast systems. We derive the approximated sum-rate of the LRA-precoder and the optimal UGS scheme. We also propose a suboptimal UGS scheme which requires low-complexity. From the simulation results, we show that the sum-rate of the proposed LRA-precoder with the optimal UGS scheme outperforms that of the conventional ZFBF with its optimal UGS scheme, especially when the number of users is small. In addition, we also show that the proposed LRA-precoder with the suboptimal UGS scheme has a considerably larger sum-rate than the conventional ZFBF with its suboptimal scheme, especially when the transmit correlation exists. |
URL : | http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5671738 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...819e4ed1a2 |
Heekwang Lee; Dongyoung Kwon; Woohyun Seo; Sungsoo Park; Jemin Lee; Seungjoo
Maeng; Jaeho Jeon; Daesik Hong; , "User group selection scheme for
lattice-reduction-aided precoder in MIMO broadcast systems," Personal Indoor
and Mobile Radio Communications (PIMRC), 2010 IEEE 21st International Symposium
on , vol., no., pp.247-251, 26-30 Sept. 2010
doi:
10.1109/PIMRC.2010.5671738
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5671738&isnumber=5671569
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