Minimum Redundancy MIMO Array Synthesis by means of Cyclic Difference Sets
Minimum Redundancy MIMO Array Synthesis by means of Cyclic Difference Sets
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DOI：
10.1155/2013/323521
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发表时间：
2013-09
影响因子：
1.5
通讯作者：
Jian Dong;Ronghua Shi;Wentai Lei;Ying Guo
中科院分区：
文献类型：
--
作者：
Jian Dong;Ronghua Shi;Wentai Lei;Ying Guo
天线阵综合是MIMO雷达中的一个重要问题。通过明智地设计天线位置，可以用少量的天线创建非常长的虚拟阵列导向矢量，从而以小的成本实现非常高的空间分辨率。本文提出了一种基于循环差集（CDS）的最小冗余（MR）MIMO阵列综合的组合方法，旨在最大化的虚拟阵列孔径为给定数量的天线。首先，描述了CDS的关键特征和基于CDS的MR-MIMO布局。推导了最大邻接虚拟阵列孔径的解析表达式。此外，基于此表达式，枚举移位过程被开发用于识别最佳的基于CDS的MR-MIMO布局。通过算例分析，指出了基于CDS的MR-MIMO阵列综合的计算有效性。
Antenna array synthesis is an important issue in MIMO radars. By judiciously designing antenna positions, one can create a very long virtual array steering vector with a small number of antennas and therefore achieve very high spatial resolution at a small cost. This paper presents a combinatorial methodology based on cyclic difference sets (CDSs) for minimum redundancy (MR) MIMO array synthesis which seeks to maximize the virtual array aperture for a given number of antennas. First, the key features of CDSs and the CDS-based MR-MIMO layouts are described. Then, the analytical expression of the maximum contiguous virtual array aperture is derived. Further, based on this expression, an enumerative shifting procedure is developed for identifying the optimal CDS-based MR-MIMO layout. Selected examples are analyzed to point out the computational effectiveness of the CDS-based MR-MIMO array synthesis.