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中文摘要：
提出了一种适应多用户MIMO-OFDM下行传输的新型子载波分配算法。该算法根据各个用户的信道特征，将空间维多用户天线组选择手段引入频率维的子载波组分配算法中，从而在不明显降低系统整体性能的前提下大大降低发射端计算复杂度，使之更适用于实时信道传输环境。仿真结果表明，该算法在计算复杂度大幅减小的情况下仍能保证系统性能无明显损失。
英文摘要：
In this paper, we propose a novel subcarrier band allocation algorithm accompanied with antenna group selection in multiuser MIMO-OFDM downlink transmission based on channel characteristic of users. With introducing spatial-dimension to subcarrier allocation in frequency dimension, this algorithm can significantly reduce the computational complexity of transmitter without apparent performance attenuation, which is more suitable for real-time environment.. Simulation results show that our proposed algorithm obtains an approximate optimal performance with significant computational complexity reduction.
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