Omnidirectional Precoding Designs Based on 2-D Golay Complementary Array Pairs for Massive MIMO Systems With Fully-Connected and Partially-Connected Structures

Recently, the design of omnidirectional precoding has been widely studied for massive multiple-input multiple-output (MIMO) systems. For the base station (BS) equipped with a uniform rectangular array (URA), the current state-of-the-art scheme uses two-dimensional (2-D) Golay complementary array pai...

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Bibliographic Details
Published in:IEEE transactions on communications 2024-05, Vol.72 (5), p.3019-3034
Main Authors: Men, Xinyu, Li, Yubo
Format: Article
Language:English
Subjects:
2-D generalized Boolean functions (GBFs)
Antenna arrays
Arrays
Boolean functions
Massive MIMO
Omnidirectional precoding
Parameters
Phase shifters
Precoding
Radio frequency
Transmission line matrix methods
two-dimensional (2-D) Golay complementary array pairs (GCAPs)
Two-dimensional displays
uniform rectangular array (URA)
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Summary:Recently, the design of omnidirectional precoding has been widely studied for massive multiple-input multiple-output (MIMO) systems. For the base station (BS) equipped with a uniform rectangular array (URA), the current state-of-the-art scheme uses two-dimensional (2-D) Golay complementary array pairs (GCAPs)/Golay complementary array sets (GCASs) as precoding matrices to achieve omnidirectional transmission. However, the existing constructions of 2-D GCAP/GCAS-based precoding can just be implemented using the analog phase shifter network with fully-connected structure (FCS), and the existing parameters of 2-D GCAPs constructed from function-based methods are limited. More specifically, the array sizes are in the form of a power-of-two. In this paper, utilizing the truncation technique, we presented three constructions of new 2-D GCAPs with non-power-of-two array sizes from 2-D generalized Boolean functions (GBFs), which have never been reported in the literature. The proposed constructions include 2-D GCAPs with power-of-two array sizes as a special case, with flexible parameters. Moreover, we further provide a theoretical connection between 2-D GBFs and precoding matrices, such that the omnidirectional precoding scheme based on the proposed 2-D GCAPs is applicable to both FCS and partially-connected structure (PCS). Finally, simulation results demonstrate that the precoding scheme is useful in massive MIMO omnidirectional transmission systems.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2024.3351749