NDLI: Adaptation between codebook based SU-MIMO and MU-MIMO with single MCS feedback in LTE

Content Provider	IEEE Xplore Digital Library
Author	Shaofeng Du Yafeng Wang Yong Zhang Yang Dacheng
Copyright Year	2010
Description	Author affiliation: China Mobile Research Institute, Beijing, China (Yong Zhang) \|\| Wireless Theories and Technologies (WT&T) Lab, Beijing University of Posts and Telecommunications, China (Shaofeng Du; Yafeng Wang; Yang Dacheng)
Abstract	This paper utilizes an adaptive modulation and coding (AMC) scheme and compares the performance of adaptation between single-user multiple input multiple output (SU-MIMO) and multi-user (MU) MIMO with that of SU-MIMO. In long term evolution (LTE), every UE only needs to feed back SU-MIMO rank 1 channel quality indicator (CQI) which could get feedback overhead and computational complexity reduction. This CQI message contains a specific MCS index predicted by the UE. In this AMC scheme, MU-MIMO modulation and coding scheme (MCS) of a user equipment (UE) can be obtained from its SU-MIMO rank 1 (single stream transmission) MCS. According to the SU-MIMO rank 1 MCS and MU-MIMO MCS obtained, we can achieve adaptation between SU-MIMO and MU-MIMO by two-user orthogonal pairing and proportional fair (PF) scheduling. Simulation results show that the adaptation can achieve significant improvement on spectrum efficiency (SE) compared with SU-MIMO by means of the AMC scheme proposed in this paper.
Starting Page	588
Ending Page	592
File Size	145573
Page Count	5
File Format	PDF
ISBN	9781424467693
e-ISBN	9781424467723
DOI	10.1109/ICBNMT.2010.5705158
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptation model Transmitting antennas Adaptive arrays Interference Downlink MU-MIMO Precoding PF MIMO LTE MCS Signal to noise ratio Adaptation
Content Type	Text
Resource Type	Article

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