{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T16:01:54Z","timestamp":1774540914591,"version":"3.50.1"},"reference-count":21,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2023,12,13]],"date-time":"2023-12-13T00:00:00Z","timestamp":1702425600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["LZ24F010005"],"award-info":[{"award-number":["LZ24F010005"]}]},{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["LDT23F01014F01"],"award-info":[{"award-number":["LDT23F01014F01"]}]},{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["U1809201"],"award-info":[{"award-number":["U1809201"]}]},{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["KYP0123001"],"award-info":[{"award-number":["KYP0123001"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["LZ24F010005"],"award-info":[{"award-number":["LZ24F010005"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["LDT23F01014F01"],"award-info":[{"award-number":["LDT23F01014F01"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["U1809201"],"award-info":[{"award-number":["U1809201"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["KYP0123001"],"award-info":[{"award-number":["KYP0123001"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Scientific Research Fund of Hangzhou Dianzi University Information Engineering College","award":["LZ24F010005"],"award-info":[{"award-number":["LZ24F010005"]}]},{"name":"Scientific Research Fund of Hangzhou Dianzi University Information Engineering College","award":["LDT23F01014F01"],"award-info":[{"award-number":["LDT23F01014F01"]}]},{"name":"Scientific Research Fund of Hangzhou Dianzi University Information Engineering College","award":["U1809201"],"award-info":[{"award-number":["U1809201"]}]},{"name":"Scientific Research Fund of Hangzhou Dianzi University Information Engineering College","award":["KYP0123001"],"award-info":[{"award-number":["KYP0123001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To solve error propagation and exorbitant computational complexity of signal detection in wireless multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) systems, a low-complex and efficient signal detection with iterative feedback is proposed via a constellation point feedback optimization of minimum mean square error-ordered successive interference cancellation (MMSE-OSIC) to approach the optimal detection. The candidate vectors are formed by selecting the candidate constellation points. Additionally, the vector most approaching received signals is chosen by the maximum likelihood (ML) criterion in formed candidate vectors to reduce the error propagation by previous erroneous decision, thus improving the detection performance. Under a large number of matrix inversion operations in the above iterative MMSE process, effective and fast signal detection is hard to be achieved. Then, a symmetric successive relaxation iterative algorithm is proposed to avoid the complex matrix inversion calculation process. The relaxation factor and initial iteration value are reasonably configured with low computational complexity to achieve good detection close to that of the MMSE with fewer iterations. Simultaneously, the error diffusion and complexity accumulation caused by the successive detection of the subsequent OSIC scheme are also improved. In addition, a method via a parallel coarse and fine detection deals with several layers to both reduce iterations and improve performance. Therefore, the proposed scheme significantly promotes the MIMO-OFDM performance and thus plays an irreplaceable role in the future sixth generation (6G) mobile communications and wireless sensor networks, and so on.<\/jats:p>","DOI":"10.3390\/s23249798","type":"journal-article","created":{"date-parts":[[2023,12,13]],"date-time":"2023-12-13T12:00:37Z","timestamp":1702468837000},"page":"9798","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Efficient and Low-Complex Signal Detection with Iterative Feedback in Wireless MIMO-OFDM Systems"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-1232-1679","authenticated-orcid":false,"given":"Ying","family":"Chen","sequence":"first","affiliation":[{"name":"Information Engineering College, Hangzhou Dianzi University, Hangzhou 311305, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9817-8429","authenticated-orcid":false,"given":"Yue","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China"},{"name":"Sichuan Provincial Energy Investment Group Co., Ltd., Chengdu 610041, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3177-2970","authenticated-orcid":false,"given":"Bin","family":"Jiang","sequence":"additional","affiliation":[{"name":"School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-9923-2091","authenticated-orcid":false,"given":"Yinan","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1720-853X","authenticated-orcid":false,"given":"Jianrong","family":"Bao","sequence":"additional","affiliation":[{"name":"School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China"},{"name":"National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1226-8365","authenticated-orcid":false,"given":"Xianghong","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1355","DOI":"10.1049\/iet-com.2014.0613","article-title":"Performance modelling of open loop and closed loop multiuser multiple-input multiple-output-orthogonal frequency division multiplexing systems through channel analysis","volume":"9","author":"Bhaskar","year":"2015","journal-title":"IET Commun."},{"key":"ref_2","first-page":"277","article-title":"Analysis of MIMO-OFDM signals with optimum equalization","volume":"4","author":"Aggarwal","year":"2013","journal-title":"Int. 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