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中文摘要：
本文在介绍LTE系统支持的各种MIMO传输模式基础上得出下行混合MIMO传输模式的接收信号模型，并且设计出了基于MMSE准则的均衡器来抑制这种混合干扰；为了提高系统仿真效率，本文还推导出了实际信道估计中，基于信道响应矩阵随机扰动的信千噪比修正公式，并通过链路仿真和系统仿真对比给出修正因子曲线。最后的仿真还给出了混合MIIV10传输模式环境下，不同传输模式用户的误码率和吞吐量变化曲线，结果对实际LTE系统的性能分析有很大的参考价值。
英文摘要：
In this paper, the received signal model of hybrid MIMO transmission schemes is presented after the introduction of LTE system supported MIMO transmission schemes firstly, and then Minimum Mean Square Error （MMSE） equalizer is designed to suppress the hybrid interference. Furthermore, for improving system simulation efficiency, modified formula of Signal to Interference plus Noise Ratio （SINR） is deduced from the random perturbation assumption of channel response matrix, and the modi- fying factor curves are derived from comparing system simulations and link simulations. Finally, the hybrid MIMO transmission schemes are considered in downlink LTE system simulations, and curves of BLER and throughput of each user with different scheme are drawn, the results have important reference value for analyzing actual LTE system performance.
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