An Investigation on the Effects of Beam Squint Caused by an Analog Beamformed User Terminal Utilizing Antenna Arrays

Abd-Alhameed, Raed A.; Hu, Yim Fun; Al-Yasir, Yasir; Parchin, Naser Ojaroudi; Ullah, Atta

Abstract

In the equivalent frequency-based model, the antenna array gain is utilised to characterise the frequency response of the beam squint effect generated by the antenna array. This impact is considered for a wide range of uniform linear array (ULA) and uniform planar array (UPA) designs, including those with and without tapering configurations. For a closer look at how the frequency response of the array adapts to the variations in the incidence angle of the signal, the bandwidth of the spectrum is varied and investigated. To study this effect, we have considered using the gain array response as an equivalent channel model in our approach. Beam squinting caused by distortion in the frequency response gain can be verified by one of two equalisers: a zero-forcing (ZF) equaliser or a minimum mean square error (MMSE) equaliser. Different cases with their analysis and results are studied and compared in terms of coded and uncoded modulations.

• Journal Article Type: Article
• Acceptance Date: Sep 3, 2023
• Online Publication Date: Sep 8, 2023
• Publication Date: 2023
• Deposit Date: Sep 25, 2023
• Publicly Available Date: Sep 25, 2023
• Electronic ISSN: 2169-3536
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Pages: 98230-98243
• DOI: https://doi.org/10.1109/access.2023.3313200
• Keywords: Equaliser, minimal mean square error, uniform linear array, uniform planar array