Orthogonal Affine Precoding and Decoding for Channel Estimation and Source Detection in MIMO Frequency-Selective Fading Channels
Orthogonal Affine Precoding and Decoding for Channel Estimation and Source Detection in MIMO Frequency-Selective Fading Channels
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DOI：
10.1109/tsp.2008.2009020
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发表时间：
2009-03
影响因子：
5.4
通讯作者：
N. N. Tran-N.;Duong H. Pham;H. D. Tuan;Ha H. Nguyen
中科院分区：
文献类型：
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作者：
N. N. Tran-N.;Duong H. Pham;H. D. Tuan;Ha H. Nguyen
针对多输入多输出（MIMO）频率选择性衰落信道，提出了一种新的仿射预编码和译码方法。仿射预编码器的优化设计由线性预编码器和训练序列组成，训练序列以正交方式叠加在线性预编码数据上。信道估计独立于数据，而训练序列在源数据检测中完全为零。此外，还解析推导了数据信号和训练信号之间的最佳功率分配。仿真结果表明，该方法在信源检测性能和计算复杂度方面明显优于其他仿射预编码方法。
A new affine precoding and decoding method for multiple-input multiple-output (MIMO) frequency-selective fading channels is proposed. The optimal design of the affine precoder consists of a linear precoder and a training sequence, which is superimposed on the linearly precoded data in an orthogonal manner. The channel is estimated independently of the data, while the training sequence is completely nulled out in the source data detection. Furthermore, the optimal power allocation between the data and training signals is also analytically derived. Simulation results show that the proposed method is significantly better than other affine precoding methods with regard to source detection performance and computational complexity.