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Enhanced Angle-of-Arrival and Polarization Parameter Estimation Using Localized Hybrid Dual-Polarized Arrays.

Xiaolu Yu1, Hang Li1, Jian Andrew Zhang2

  • 1School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.

Sensors (Basel, Switzerland)
|July 27, 2022
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Summary

This study introduces enhanced methods for estimating angle-of-arrival (AoA) and polarization in millimeter wave (mmWave) systems using dual-polarized antenna arrays. These techniques improve accuracy and signal-to-noise ratio for better wireless communication.

Keywords:
angle-of-arrival estimationhybrid dual-polarized arraylocalized subarraysmmWave communicationspolarization parameter

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Area of Science:

  • Electrical Engineering
  • Wireless Communications
  • Signal Processing

Background:

  • Millimeter wave (mmWave) systems rely heavily on line-of-sight propagation.
  • Accurate angle-of-arrival (AoA) and polarization estimation are crucial for mmWave receivers.
  • Dual-polarized antenna arrays offer potential for improved signal acquisition.

Purpose of the Study:

  • To develop enhanced methods for AoA and polarization estimation in mmWave systems.
  • To leverage dual-polarized antenna arrays for improved estimation accuracy.
  • To analyze the performance bounds and signal-to-noise ratio characteristics of the proposed methods.

Main Methods:

  • Proposed an enhanced AoA estimation method using a localized hybrid dual-polarized array.
  • Implemented a recursive estimation approach for AoA by updating phase offset estimations.
  • Developed an enhanced polarization estimation method utilizing the cross-correlation-to-power ratio.

Main Results:

  • The enhanced AoA method improves phase offset calibration and SNR for phase offset estimation.
  • The recursive estimation leads to significantly improved AoA accuracy.
  • The enhanced polarization method enhances the accuracy of polarization parameter estimation.
  • Derived closed-form expressions for AoA estimation mean square error lower bounds.

Conclusions:

  • The proposed enhanced AoA and polarization estimation methods outperform existing state-of-the-art techniques in mmWave systems.
  • Dual-polarized antenna arrays are effective in improving estimation accuracy and SNR.
  • The developed methods offer significant advancements for mmWave communication systems.