Co-channel Interference Mitigation via Joint Frequency and Space Domains Base Station Cooperation for Multi-Cell OFDMA Systems
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概要
- 論文の詳細を見る
Base Station (BS) cooperation has been considered as a promising technology to mitigate co-channel interference (CCI), yielding great capacity improvement in cellular systems. In this paper, by combining frequency domain cooperation and space domain cooperation together, we design a new CCI mitigation scheme to maximize the total utility for a multi-cell OFDMA network. The scheme formulates the CCI mitigation problem as a mixture integer programming problem, which involves a joint user-set-oriented subcarrier assignment and power allocation. A computationally feasible algorithm based on Lagrange dual decomposition is derived to evaluate the optimal value of the problem. Moreover, a low-complexity suboptimal algorithm is also presented. Simulation results show that our scheme outperforms the counterparts incorporating BS cooperation in a single domain considerably, and the proposed low-complexity algorithm achieves near optimal performance.
- （社）電子情報通信学会の論文
- 2010-12-01
著者
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Wang Youzheng
National Laboratory For Information Science And Technology Tsinghua University
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Tao Xiaoming
Department Of Electronic Engineering Tsinghua University
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Lu Jianhua
Department Of Electronic Engineering Tsinghua University
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Wang Youzheng
School Of Aerospace Tsinghua University
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JIA Yizhen
Department of Electronic Engineering, Tsinghua University
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PEI Yukui
Department of Electronic Engineering, Tsinghua University
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Pei Yukui
Department Of Electronic Engineering Tsinghua University
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Jia Yizhen
Department Of Electronic Engineering Tsinghua University
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LU Jianhua
Department of Electronic Engineering, Tsinghua University
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