A Broadcast Scheme for MIMO Systems with Channel State Information at the Transmitter

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概要

• 論文の詳細を見る

• We propose a new broadcast strategy for a multiple-input multiple-output (MIMO) system with N transmit antennas at the transmitter and M≤N single antenna receivers. The proposed method, based on dirty-paper coding (DPC), spatially separates the M users but does not suffer from the power loss of classical spatial division multiple access (SDMA). For the special case of M=N=2 and when the two single antenna receivers are assumed to be co-located, the proposed scheme produces a 2 transmit, 2 receiver antenna MIMO transmission system that doubles the symbol rate of MIMO space-time block code (STBC) systems from one to two symbol per transmission time. It is proved theoretically and experimentally that the proposed scheme provides the same performance level as that of MIMO STBC systems (i. e., the Alamouti scheme) for the first symbol, and the same performance as the Bell labs layered space-time (BLAST) system for the second symbol. When compared to the BLAST system, the proposed scheme has the same symbol rate, but achieves significantly better performance, since it provides 2 level diversity per symbol on the first symbol while the BLAST system does not provide any diversity.

• （社）電子情報通信学会の論文
• 2008-02-01

著者

• HWANG Insoo

  Dept. of Electrical and Computer Engineering

• YOU Cheolwoo

  Dept. of Communication Engineering, Myongji University

• TAROKH Vahid

  Division of Engineering and Applied Sciences, Harvard University

• Kim Dongho

  Dept. Of Media Engineering Seoul National University Of Technology

• You Cheolwoo

  Dept. Of Communication Engineering Myongji University

• Hwang Insoo

  Dept. Of Electrical And Computer Engineering The University Of Texas At Austin

• Kim Yungsoo

  4g System Lab. Telecommunication R&d Center Samsung Electronics

• Tarokh Vahid

  Division Of Engineering And Applied Sciences Harvard University

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