下行SDM/OFDMA系统中基于效用函数的多用户调度算法
doi: 10.3724/SP.J.1146.2006.01776
A Utility Based Multiuser Scheduling Algorithm in Downlink SDM/OFDMA System
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摘要: 该文研究了空分复用/正交频分多址(SDM/OFDMA)无线通信系统中的多用户调度问题,针对该系统的空时频三维调度特点,提出一种基于效用函数的多用户调度算法。该算法利用空间多用户分集获得增益,同时兼顾系统的整体效率和用户的个体效用。通过计算机仿真验证了算法具有和穷举搜索算法相近的性能,但算法复杂度大大降低。Abstract: The multiuser scheduling issue in Spatial Division Multiplexing/Orthogonal Frequency Division Multiple Access (SDM/OFDMA) wireless communication system is studied. This issue is characterized as three dimensions of time, frequency, and space. A utility based multiuser scheduling algorithms is proposed to both improve the system resource utilization and maximize the users utility. The computer simulation results show that the performance of the proposed algorithms is similar to the exhaustive searching algorithm while the complexity is highly reduced.
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