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Myeongyun Cho, Youngju Kim, Jaekon Lee and Daesik Hong, "A CQI Feedback Reduction Scheme for Multi-User MIMO/OFDMA Systems", PIMRC 2007, Sep. 2007

[IEEE PIMRC]
조회 97078
Status : Presented 
Date : 2007-09 
Title : A CQI Feedback Reduction Scheme for Multi-User MIMO/OFDMA Systems 
Authors : Myeongyun Cho, Youngju Kim, Jaekon Lee and Daesik Hong 
Conference : IEEE International Symposium on Personal, Indoor and Mobile Radio Communications 
Abstract : An opportunistic scheduling is adopted to improve the capacity of the system by exploiting the multiuser diversity of multiuser MIMO (MU-MIMO) systems. However, it requires a large amount of feedback carrying the channel quality information (CQI) of each user to the transmitter. The considered Per User Unitary and Rate Control (PU2RC) needs to feedback the preferred precoding index and its CQIs, and it has a defect in scheduling the streams for the grouped user. In order to overcome these drawbacks, a novel feedback reduction scheme is proposed and is modified for OFDMA systems in this paper. It employs transmitter controlled precoding and opportunistic feedback (TCP-OFB) in conjunction with frequency scheduling. The simulation results demonstrate that TCP-OFB/OFDMA shows comparable performance to PU2RC while it only requires far reduced feedback load. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...MA+Systems 
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List of Articles
No.
Statussort Date
4 [IEEE PIMRC] 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 file Presented  2010-09 
3 [IEEE PIMRC] Hyungjong Kim, Sungeun Lee, Kyungchuk Kwak, Hyunkee Min, and Daesik Hong, "On the Design of ZF and MMSE Tomlinson-Harashima Precoding in Multiuser MIMO Amplify-and-Forward Relay System", IEEE PIMRC, Sep. 2009 file Presented  2009-09 
2 [IEEE PIMRC] Hyungjong Kim, Kyungchul Kwak and Daesik Hong, "The Effect of Spatial Diversity in MIMO System with Multiuser Diversity Scheduler", PIMRC, Sep. 2008 file Presented  2008-09 
» [IEEE PIMRC] Myeongyun Cho, Youngju Kim, Jaekon Lee and Daesik Hong, "A CQI Feedback Reduction Scheme for Multi-User MIMO/OFDMA Systems", PIMRC 2007, Sep. 2007 Presented  2007-09 
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