Performance tradeoffs among low‐complexity detection algorithms for MIMO‐LTE receivers
Performance tradeoffs among low‐complexity detection algorithms for MIMO‐LTE receivers
复制标题
MIMO-LTE 接收器低复杂度检测算法之间的性能权衡
DOI：
10.1002/dac.1005
复制
发表时间：
2009
影响因子：
2.1
通讯作者：
J. Entrambasaguas
中科院分区：
文献类型：
--
作者：
D. Morales;J. F. Paris;J. Entrambasaguas
即将到来的第三代合作伙伴计划-长期演进（3GPP-LTE）蜂窝标准将采用空间复用来显著提高数据速率。空间复用信号的检测是LTE接收机设计中的重要问题。在本文中，我们评估了一组低复杂度的多输入多输出（MIMO）检测算法在一个现实的LTE下行链路系统的性能复杂度权衡。具体地，天线相关性和信道估计误差已经被考虑用于实际的MIMO-LTE接收器。已经实现了LTE下行链路模型，以便评估三种类型的检测器：线性、未排序的连续干扰消除（SIC）和有序SIC。我们的仿真结果表明，未排序的SIC检测器提出了一个非常差的性能复杂度权衡。此外，线性检测器被证明是最好的候选者，因为有序SIC检测器的性能改善在现实场景中并不显著。版权所有© 2009约翰威利父子有限公司。
The upcoming Third‐Generation Partnership Project—Long‐Term Evolution (3GPP‐LTE) cellular standard will employ spatial multiplexing to significantly increase the data rates. Detection of the spatially multiplexed signals is an essential issue in the design of an LTE receiver. In this paper, we evaluate the performance–complexity tradeoffs for a set of low‐complexity multiple input multiple output (MIMO) detection algorithms in a realistic LTE downlink system. Specifically, antenna correlation and channel estimation errors have been considered for a practical MIMO‐LTE receiver. An LTE downlink model has been implemented in order to evaluate three types of detectors: linear, unsorted successive interference cancellation (SIC), and ordered SIC. Our simulation results show that the unsorted SIC detectors present a very poor performance–complexity tradeoff. Besides, linear detectors are shown to be the best candidates as the performance improvement for the ordered SIC detectors is not significant in a realistic scenario. Copyright © 2009 John Wiley & Sons, Ltd.