Abstract
基于动态子信道分配的MIMO-OFDM波束成形系统可以获得比传统系统更好的误码率性能。但由于处理或者反馈时延的影响，会使得发射机利用不准确的信道状态信息发射数据，从而在数据流之间引入干扰，导致系统性能下降。通过分析时延对系统的影响，该文提出了一种改进的检测算法：通过构建等效MIMO系统模型，采用最小均方误差MIMO检测算法抑制数据流之间的干扰，并利用等效MIMO信道矩阵的特征值分解白化噪声获得等效高斯信道模型，计算编码比特的对数似然比。仿真表明，该算法相对于现有算法有2.5～4 dB的性能增益。
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