A low complexity dynamic subarray combination method for MIMO transmitter

Cui WANG; Peng PAN; Shuai ZHANG; Junrong YAN

doi:10.11959/j.issn.1000-0801.2020161

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A low complexity dynamic subarray combination method for MIMO transmitter

Research and Development | 更新时间：2024-06-05

- A low complexity dynamic subarray combination method for MIMO transmitter
- Telecommunications Science Vol. 36, Issue 8, Pages: 92-102(2020)
- 作者机构：
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- DOI：10.11959/j.issn.1000-0801.2020161
  CLC： TN929
- Published Online：2020-08，
  
  Published：20 August 2020
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Cui WANG, Peng PAN, Shuai ZHANG, et al. A low complexity dynamic subarray combination method for MIMO transmitter[J]. Telecommunications science, 2020, 36(8): 92-102.
DOI：

Cui WANG, Peng PAN, Shuai ZHANG, et al. A low complexity dynamic subarray combination method for MIMO transmitter[J]. Telecommunications science, 2020, 36(8): 92-102. DOI： 10.11959/j.issn.1000-0801.2020161.

摘要

对于采用部分连接架构的毫米波MIMO系统，为了提升频谱效率，根据信道条件动态调整各子阵列的天线组成。然而，对天线进行最佳分组需要按照一定准则对所有可能的天线组合进行穷举搜索，将导致复杂度难以接受。针对这一问题，提出了一种低复杂度的子阵列动态分配方法，核心是在对阵元进行分组时，引入一定的规则，从而显著降低组合个数，减少搜索范围。具体而言，给出了两种低复杂度的天线组合算法。首先，考虑到毫米波天线间具有较强的相关性，将相邻多个天线虚拟为一个阵元，从而降低搜索空间。其次，通过将所有天线分为上下半区，实现基于分区的天线组合，实现了搜索空间的降低。仿真结果表明，所提的方法能够在性能和复杂度之间获得较好的折中。

Abstract

For the mmWave MIMO system using a partially-connected structure

in order to improve the spectral efficiency

the antenna composition of each subarray will be dynamically adjusted according to the channel conditions.However

the optimal grouping of antennas requires exhaustive searching for all possible antenna combinations according to certain criteri

which leads to unacceptable complexity.In response to the problem

a low-complexity sub-array dynamic allocation method was proposed.The core was to introduce certain rules when grouping array elements

thereby significantly reducing the number of combinations and reducing the search range.Specifically

two low-complexity antenna combination algorithms were proposed.Firstly

considering the strong correlation between mmWave antennas

multiple adjacent antennas were virtualized as an array element

thereby reducing the search space.Secondly

by dividing all antennas into upper and lower half areas

the antenna combination based on partition was realized

and the search space was also reduced.Simulation results show that the proposed method can achieve a good trade-off between performance and complexity.

关键词

Keywords

references

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