LI Jian-dong, CAO Fei-fei, YANG Jia-wei. IC-MMSE Based Iterative Detectors for V-BLAST Systems with Estimated CSI[J]. Acta Electronica Sinica, 2007, 35(6A): 54-59.
DOI:
LI Jian-dong, CAO Fei-fei, YANG Jia-wei. IC-MMSE Based Iterative Detectors for V-BLAST Systems with Estimated CSI[J]. Acta Electronica Sinica, 2007, 35(6A): 54-59.DOI:
IC-MMSE Based Iterative Detectors for V-BLAST Systems with Estimated CSI
针对Vertical Bell Laboratories Layered Space-Time(V-BLAST)系统中干扰抵消-最小均方误差滤波(Interfer- ence Cancellation-Minimum Mean Square Error filtering:IC-MMSE)迭代检测算法
本文对使用实际估计CSI(Channel State In- formation)的IC-MMSE迭代检测算法进行了研究.通过在MMSE滤波中考虑信道估计误差
提出了修正的MMSE滤波.与忽略信道估计误差的MMSE滤波相比
修正的MMSE滤波能够获得较小的均方误差.仿真结果表明采用修正的MMSE滤波能够获得显著的性能增益
同时不会增加计算复杂度.
Abstract
For the Vertical Bell Laboratories Layered Space-Time(V-BLAST) systems
the minimum-mean-squaro-error(MMSE) filtering based iterative interference carxellation detector(IC-MMSE) is studied with esrimated channel state information(CSI).By taking the channel estimation error(CEE) into consideration
a modified MMSE filtering is proposed to acquire less mean-square-emor(MSE)than that of the mismatched one
which neglects the CEE.Simulation results show that significant performarce gains can be obtained by adopting the modified MMSE filtering without additional computational complexity.