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Data Stream Allocation Algorithm for Maximizing Sum Capacity in Multiuser MIMO Systems  

Kim, Bong-Seok (영남대학교 정보통신공학과 광대역무선통신연구실)
Choi, Kwon-Hue (영남대학교 정보통신공학과 광대역무선통신연구실)
Publication Information
Journal of Satellite, Information and Communications / v.6, no.1, 2011 , pp. 19-27 More about this Journal
Abstract
In this paper, we propose the data stream allocation algorithms for maximizing sum capacity of downlink multiuser MIMO (Multiple-input Multiple-output) systems with BD (Block Diagonalization). The conventional BD precoding algorithms maximize the capacity by controlling power against channel gain of each user. In multiuser MIMO systems, however, the number of data streams for each user can be used to as another control parameter, which determines the capacity. This paper proposes the data stream allocation algorithm of BD for increasing capacity in multiuser MIMO systems. The proposed algorithm allocates unequal bit stream to each user based on channel matrix of each user for maximizing sum capacity. It is proved that proposed algorithm can achieve the significantly improved sum capacity by computer simulation.
Keywords
Stream Allocation; BD; Multiuser MIMO; Maximum Sum Capacity; Mean Channel Gain;
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Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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