03077nas a2200361 a 4500 20260817161123.0 220914s2022 th uu m rtt 0| a1eng d .b1239175x AIT Thesis no.TC-22-01 Bajracharya, Oja 2D DOA estimation for volumetric antenna array using convolutional neural network for smart antenna application Pathum Thani, Thailand : Asian Institute of Technology, 2022 34 leaves : ill. Thesis ; no. TC-22-01 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications Thesis (M. Eng.) - Asian Institute of Technology, 2022 Direction of Arrival (DOA) Estimation is amongst the pivotal technologies in the field of smart antenna systems. Smart antenna systems are capable of locating and tracking signals by the use of various DOA algorithms. Hence, these systems can dynamically adapt to enhance the reception of the signals in the necessary directions and minimize the effect of the interfering signals. Two-dimensional (2D) DOA estimation provides ample spatial statistics of the signals impinging in the antenna array, and has more practical significance in smart antenna applications for source localization. Since regular planar antenna arrays are unable to meet the requirements for the quick and precise localization of mobile sources, the concept of volumetric antenna arrays has been introduced. However, there have been limited research done on DOA estimation of these volumetric antenna arrays. A novel approach to 2D DOA estimation of a volumetric antenna array using Convolutional Neural Network (CNN) is proposed in this study. The 2D DOA prediction network takes the covariance matrices of the various angle pairs as its input. These matrices are computed from the volumetric extension of the planar array which is preprocessed for better feature extraction. In addition, the signals simulated undergo multipath fading during its generation, to closely resemble a real-world signal. Finally, the CNN outputs the predicted angle pairs for a given number of test samples of angle pair covariance matrices. Neural networks (Computer science) Antenna arrays Attaphongse Taparugssanagorn, Chairperson Teerapat Sanguankotchakorn, Examination Committee Mongkol Ekpanyapong, Examination Committee Asian Institute of Technology Scholarships, Scholarship Donor Asian Institute of Technology. Thesis ; no. TC-22-01 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17272 .b1239175x mnait m 240419 0 220914 m b m 0 mnarc 40 Barcode : 30020220005659 CREATED : 2022-09-13 RECORD # : i1339910x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 20 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.TC-22-01 30020220005659 2026-08-17 16:11:23 1 2026-08-17 40