Downlink Transmission Scheme for Wireless MIMO Broadcast Channels with Multiuser Diversity

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概要

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• Sum power iterative water-filling (SPIWF) algorithm provides sum-rate-optimal transmission scheme for wireless multiple-input multiple-output (MIMO) broadcast channels (BC), whereas it suffers from its high complexity. In this paper, we propose a new transmission scheme based on a novel block zero-forcing dirty paper coding (Block ZF-DPC) strategy and multiuser-diversity-achieving user selection procedure. The Block ZF-DPC can be considered as an extension of existing ZF-DPC into MIMO BCs. Two user selection algorithms having linear increasing complexity with the number of users have been proposed. One aims at maximizing the achievable sum rate directly and the other is based on Gram-Schmidt Orthogonalization (GSO) and Frobenius norm. The proposed scheme is shown to achieve a sum rate close to the sum capacity of MIMO BC and obtain optimal multiplexing and multiuser diversity gain. In addition, we also show that both selection algorithms achieve a significant part of the sum rate of the optimal greedy selection algorithm at low computation expenditure.

• （社）電子情報通信学会の論文
• 2008-08-01

著者

• Li Hao

  Dept. Of Electronic Engineering Shanghai Jiao Tong University

• XU Changqing

  Dept. of Electronic Engineering, Shanghai Jiao Tong University

• FAN Pingzhi

  IMC, Southwest Jiao Tong University

• Fan Pingzhi

  Southwest Jiaotong Univ. Sichuan Chn

• Xu Changqing

  Dept. Of Electronic Engineering Shanghai Jiao Tong University

関連論文

• Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences(Spread Spectrum Technologies and Applications)
• Construction of Sequences with Large Zero Correlation Zone(Spread Spectrum Technologies and Applications)
• Robust Linear Transmit/Receive Processing for Correlated MIMO Downlink with Imperfect CSI
• Downlink Transmission Scheme for Wireless MIMO Broadcast Channels with Multiuser Diversity

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