Multi-Dimensional Joint Constellation and Precoding Design for MIMO Systems

被引:1
|
作者
Zhang, Xinliang [1 ]
Vaezi, Mojtaba [1 ]
机构
[1] Villanova Univ, Dept Elect & Comp Engn, Villanova, PA 19085 USA
关键词
Symbols; MIMO communication; Precoding; Modulation; Quadrature amplitude modulation; Three-dimensional displays; Optimization; Constellation design; precoding; MIMO; symbol error rate; bit error rate; Mahalanobis distance; autoencoder;
D O I
10.1109/LWC.2023.3241199
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Didital modulation and precoding are two key modules for increasing the data rate and reducing the symbol error rate in multiple-input multiple-output (MIMO) systems. Traditionally, these two modules are designed separately, and regular constellations like M-ary phase-shift keying (M-PSK) and quadrature amplitude modulation (QAM) are used for modulation. However, significant gains can be achieved if modulation and precoding are designed jointly for all antennas. Motivated by this, a multi-dimensional joint constellation and precoding design is proposed to optimize the in-phase and quadrature components for all sub-channels of a MIMO channel at once. The objective is to maximize the minimum distance among the symbols. Extensive simulation results indicate that this approach can significantly improve the performance of the state-of-the-art solutions by reducing the symbol error rate and bit error rate.
引用
收藏
页码:713 / 717
页数:5
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