{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T00:16:16Z","timestamp":1773015376643,"version":"3.50.1"},"reference-count":14,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,4,28]],"date-time":"2025-04-28T00:00:00Z","timestamp":1745798400000},"content-version":"vor","delay-in-days":117,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100020595","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["113-2635-E-025-001"],"award-info":[{"award-number":["113-2635-E-025-001"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal of Distributed Sensor Networks"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:p>This paper introduces a novel approach for direction of arrival (DOA) estimation utilizing hybrid digital and analog phase alignment (HDAPA) tailored for hybrid analog and digital massive multiple\u2010input multiple\u2010output (MIMO) receive arrays. To address the inherent high complexity associated with traditional HDAPA and analog phase alignment methods\u2014primarily due to exhaustive linear spectrum searching with small step sizes\u2014a more efficient method has been developed. This new approach leverages polynomial rooting techniques instead of conventional spectral searching. However, this polynomial rooting method tends to be less effective in environments with significant noise. To overcome this limitation, the paper proposes an enhanced polynomial rooting estimation method grounded in the cost function of the multiple signal classification (MUSIC) algorithm, which demonstrates increased robustness in low signal\u2010to\u2010noise ratio conditions. The key innovation lies in directly taking the root of the first\u2010order derivative of the cost function. The effectiveness of the proposed method is validated through various computer simulations.<\/jats:p>","DOI":"10.1155\/dsn\/6577686","type":"journal-article","created":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:49:59Z","timestamp":1745887799000},"source":"Crossref","is-referenced-by-count":0,"title":["DOA Estimation Based on Hybrid Digital and Analog Phase Alignment With Polynomial Rooting Approaches for Hybrid Massive MIMO Receive Array"],"prefix":"10.1155","volume":"2025","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4183-6678","authenticated-orcid":false,"given":"Tsui-Ping","family":"Chang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chao-Li","family":"Meng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,4,28]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1109\/OJCOMS.2021.3071496"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2020.3047866"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.3390\/electronics10141667"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.comcom.2021.03.025"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2018.2805803"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1631\/FITEE.1601817"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1145\/3538806.3538808"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/ICCT59356.2023.10419535"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/GCWkshps56602.2022.10008613"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11432-021-3314-4"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMLCN.2024.3506874"},{"key":"e_1_2_9_12_2","doi-asserted-by":"crossref","unstructured":"BaiJ. ChenM. LiY. ShuF. TangW. PanC. andWuY. Multi-Modal Iterative and Deep Fusion Frameworks for Enhanced Passive DOA Sensing Via a Green Massive H2AD MIMO Receiver 2025 https:\/\/arxiv.org\/abs\/2411.06927.","DOI":"10.1109\/TGCN.2025.3543476"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1109\/29.45540"},{"key":"e_1_2_9_14_2","unstructured":"ChangT. P.andMengC. L. DOA Estimation Based on Hybrid Digital and Analog Phase Alignment with Polynomial Rooting Approaches for Hybrid Massive MIMO Receive Array Available at SSRN:https:\/\/ssrn.com\/abstract=4963963."}],"container-title":["International Journal of Distributed Sensor Networks"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/dsn\/6577686","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1155\/dsn\/6577686","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/dsn\/6577686","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T23:13:57Z","timestamp":1773011637000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/dsn\/6577686"}},"subtitle":[],"editor":[{"given":"Ashish","family":"Bagwari","sequence":"additional","affiliation":[],"role":[{"role":"editor","vocabulary":"crossref"}]}],"short-title":[],"issued":{"date-parts":[[2025,1]]},"references-count":14,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2025,1]]}},"alternative-id":["10.1155\/dsn\/6577686"],"URL":"https:\/\/doi.org\/10.1155\/dsn\/6577686","archive":["Portico"],"relation":{},"ISSN":["1550-1329","1550-1477"],"issn-type":[{"value":"1550-1329","type":"print"},{"value":"1550-1477","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,1]]},"article-number":"6577686"}}