An Efficient Downlink Scheduling Strategy Using Normal Graphs for Multiuser MIMO Wireless Systems

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概要

• 論文の詳細を見る

• Inspired by the success of the low-density parity-check (LDPC) codes in the field of error-control coding, in this paper we propose transforming the downlink multiuser multiple-input multiple-output scheduling problem into an LDPC-like problem using the normal graph. Based on the normal graph framework, soft information, which indicates the probability that each user will be scheduled to transmit packets at the access point through a specified angle-frequency sub-channel, is exchanged among the local processors to iteratively optimize the multiuser transmission schedule. Computer simulations show that the proposed algorithm can efficiently schedule simultaneous multiuser transmission which then increases the overall channel utilization and reduces the average packet delay.

• （社）電子情報通信学会の論文
• 2008-02-01

著者

• CHEN Jung-Chieh

  Department of Optoelectronics and Communication Engineering, National Kaohsiung Normal University

• Wen Chao-kai

  Media Tek Inc.

• Lee Yao-nan

  Institute Of Communications Engineering National Tsing Hua University

• Chen Jung-chieh

  Department Of Optoelectronics And Communication Engineering National Kaohsiung Normal University

• WU Cheng-Hsuan

  Institute of Communications Engineering, National Tsing Hua University

• Wu Cheng-hsuan

  Institute Of Communications Engineering National Tsing Hua University

関連論文

• A Low-Complexity and High-Performance 2D Look-Up Table for LDPC Hardware Implementation
• An Efficient Downlink Scheduling Strategy Using Normal Graphs for Multiuser MIMO Wireless Systems
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• Exploiting Only Channel Spatial Correlations for Optimal Power-Saving Input Covariance in MIMO-Based Wireless Systems(Fundamental Theories for Communications)

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