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http://dx.doi.org/10.5573/ieie.2014.51.12.003

An Adaptive Joint Precoding for Multi-user MIMO Systems  

Park, Ju Yong (Department of Internet, Information & Communication, Shyngyeong University)
Hanif, Mohammad Abu (Division of Electronic Engineering, Chonbuk National University)
Song, Sang Seob (Division of Electronic Engineering, Chonbuk National University)
Lee, Moon Ho (Division of Electronic Engineering, Chonbuk National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.12, 2014 , pp. 3-11 More about this Journal
Abstract
Multiple antennas can provide huge capacity gains when the transmitter knows the channel state information (CSI). Precoding is a technique that exploits CSI at the transmitter side. In this paper, an adaptive precoding scheme is proposed, called a hybrid multiple-input multiple-output (MIMO) precoding (HMP). HMP is a combination of linear and nonlinear precoding. The number of transmit antennas less than or equal to four is as same as the conventional antenna selection scheme. Therefore, the HMP scheme uses more than four transmit antennas. The good channel means that the channels must be selected to maximize the channel capacity among the given channels, and the rest channels are called bad channel. In HMP scheme, we use the nonlinear precoding in the good channels and the linear precoding in the bad channels. The well-known Tomlinson-Harashima precoding (THP) is considered as nonlinear precoding. The system throughput and MSE (minimum square error) are shown for the performance of HMP scheme compared to the conventional schemes which are BD (block diagonalization), antenna selection and THP.
Keywords
MIMO; THP; Dirty Paper Coding; Block Diagonal Cannel; Linear Precoding; HMP; CSI;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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