ScholarWorks@중앙대학교

초록

Extremely large antenna arrays, operating at mmWave or sub-THz frequency bands, are essential to meet the ambitious performance targets envisioned for sixth-generation (6G) wireless networks, but they face near-field challenges due to spherical wavefronts. This study proposes a novel beam-tracking method for extremely large uniform planar arrays (ELUPAs) using an overlapped subarray configuration. The method tracks the beam by estimating the spatial response parameters, which include both angle and range, using the first-order differential product between signals from closely spaced and overlapped subarrays. A single-antenna-element displacement between overlapped subarrays introduces phase symmetry, enabling robust and efficient parameter estimation for near-field beam tracking.

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