Joint Scheduling and Beamforming for Energy Efficiency Maximization in Downlink Coordinated Multi-Cell Networks

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• 作者：Zhao Tong ; Bingbing Li ; Yongtao Hui
• 关键词：Energy efficiency ; Coordinated scheduling ; Beamforming optimization ; Superlinear convergence
• 刊名：Wireless Personal Communications
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：85
• 期：3
• 页码：1333-1350
• 全文大小：666 KB
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• 作者单位：Zhao Tong (1)
  Bingbing Li (1)
  Yongtao Hui (1)
  
  1. State Key Laboratory of Integrated Service Networks, Xidian University, No. 2 Taibai South Road, Xi’an, People’s Republic of China
  
• 刊物类别：Engineering
• 刊物主题：Electronic and Computer Engineering
  Signal,Image and Speech Processing
  Processor Architectures
  
• 出版者：Springer Netherlands
• ISSN：1572-834X

文摘

Green communication attracts more and more attention and energy efficiency is becoming an important performance evaluation for the future generations of wireless networks. This paper aims to investigate the optimal energy-efficient design for downlink multi-cell multi-antenna OFDMA environment with coordinated scheduling and beamforming. We target at maximizing the energy efficiency of the whole network subject to the power constraint for each base station and the maximum co-channel interference limitation. At the solving stage, we propose an improved binary search approach (IBSA) which is superlinear convergent and can provide explicit optimal range at every iteration. A joint scheduling and beamforming algorithm is further developed to solve the secondary problem embedded in each iteration of IBSA. Simulation results demonstrate that the proposed algorithm has fast convergent rate and achieves significant performance gain in energy efficiency for cellular network.