Angle-of-Arrival Estimation in Large-Scale Hybrid Antenna Arrays

Publisher:
Wiley-IEEE Press
Publication Type:
Chapter
Citation:
Antenna and Array Technologies for Future Wireless Ecosystems, 2022, pp. 305-334
Issue Date:
2022-08-02
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Large-scale hybrid antenna arrays are able to leverage array gains, transceiver sizes, and costs for massive multiple-input-multiple-output (MIMO) communications in the millimeter-wave and terahertz frequency bands. However, challenges of effectively applying such arrays arise from the estimation of the angle-of-arrival (AoA). In this chapter, we first review several important applications of large-scale antenna arrays in the fifth-generation (5G) and beyond 5G (B5G) communications systems. Several popular hybrid structures of large-scale arrays are then outlined. Next, we highlight the importance and challenges of the AoA estimation in large-scale hybrid arrays and their applications, along with an overview of existing estimation methods. Finally, some recent breakthroughs on fast and accurate AoA estimation are introduced, unveiling some interesting properties/rules for different types of hybrid arrays.
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