Cramér-Rao Lower Bound on AoA Estimation Using an RF Lens-Embedded Antenna Array

Jae Nam Shim, Hongseok Park, Chan Byoung Chae, Dong Ku Kim, Yonina C. Eldar

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this letter, we investigate the Cramér-Rao lower bound (CRLB) on angle of arrival (AoA) estimation of an RF lens-embedded antenna array. We first derive an expression for the received signal, in terms of intrinsic lens characteristics, using an RF lens-embedded antenna array. As the AoA changes, the received signal through the RF lens also changes in amplitude. This differentiates the RF lens-embedded antenna array from a conventional uniform linear array (ULA) without an RF lens. Based on this property, we next derive the CRLB on AoA estimation and confirm that the CRLB of an RF lens-embedded antenna array may be better than the CRLB for a conventional ULA in a certain desired range. The results can be used as a guideline for designing RF lens-embedded antenna arrays in fifth generation localization.

Original languageEnglish
Article number8488554
Pages (from-to)2359-2363
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume17
Issue number12
DOIs
Publication statusPublished - 2018 Dec

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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