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[Keyword] centralized scheduling(1hit)

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  • Low Complexity Centralized Scheduling Scheme for Downlink CoMP

    Jing WANG  Satoshi NAGATA  Lan CHEN  Huiling JIANG  

     
    PAPER-Wireless Communication Technologies

      Vol:
    E98-B No:5
      Page(s):
    940-948

    Coordinated multi-point (CoMP) transmission and reception is a promising technique for interference mitigation in cellular systems. The scheduling algorithm for CoMP has a significant impact on the network processing complexity and performance. Performing exhaustive search permits centralized scheduling and thus the optimal global solution; however, it incurs a high level of computational complexity and may be impractical or lead to high cost as well as network instability. In order to provide a more realistic scheduling method while balancing performance and complexity, we propose a low complexity centralized scheduling scheme that adaptively selects users for single-cell transmission or different CoMP scheme transmission to maximize the system weighted sum capacity. We evaluate the computational complexity and system-level simulation performance in this paper. Compared to the optimal scheduling method with exhaustive search, the proposed scheme has a much lower complexity level and achieves near optimal performance.