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Cascade AOA Estimation Algorithm Based on Flexible Massive Antenna Array.

Tae-Yun Kim¹, Suk-Seung Hwang²

¹Department of Electronic Engineering, Chosun University, Gwangju 61452, Korea.

Sensors (Basel, Switzerland)

|December 2, 2020

Summary

This summary is machine-generated.

This study introduces a new cascade Angle-of-Arrival (AOA) estimation algorithm using CAPON and Beamspace MUSIC. It significantly reduces computational complexity while maintaining high accuracy, especially for massive antenna arrays.

Keywords:

Angle-of-Arrival (AOA)Beamspace MUSIC CAPON cascade estimation flexible massive antenna

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Area of Science:

Wireless communication
Signal processing
Electromagnetics

Background:

Angle-of-Arrival (AOA) estimation is crucial for location-based services (LBS) in civilian and military applications.
Accurate AOA estimation often requires large antenna arrays, leading to high computational complexity with traditional methods like Multiple Signal Classification (MUSIC).

Purpose of the Study:

To develop a computationally efficient AOA estimation algorithm.
To maintain high estimation performance comparable to conventional methods.
To optimize AOA estimation for massive antenna array systems.

Main Methods:

Proposed a cascade algorithm combining CAPON and Beamspace MUSIC.
Utilized a flexible antenna array with an on/off capability.
Employed CAPON for initial coarse AOA grouping using a subset of antennas.
Applied Beamspace MUSIC for fine-grained AOA estimation within groups using the full array.

Main Results:

Achieved significantly lower computational complexity compared to conventional MUSIC.
Demonstrated estimation performance comparable to the MUSIC algorithm.
Showcased high efficiency and effectiveness with massive antenna arrays.

Conclusions:

The proposed cascade AOA estimation algorithm offers a practical solution for complex wireless environments.
This method provides a balance between computational efficiency and estimation accuracy.
It is particularly beneficial for next-generation wireless systems utilizing massive MIMO antenna configurations.