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The proposed one-stage method outperforms the conventional two-stage SUMIS when the subspace size is large enough. The performance advantage of the proposed SUMIS-SIA mainly results from the average number of soft information updates being equal to the \u2019subspace size,\u2019 instead of only once during the two-stage SUMIS detection. Thus, the SUMIS-SIA achieves a better trade-off between performance and complexity. To further reduce the complexity, a channel-shortening method based on subspace suppression is proposed. Simulation results show that the proposed channel-shortening one-stage method also outperforms SUMIS, which benefits from SIA.<\/jats:p>","DOI":"10.1186\/s13638-024-02381-5","type":"journal-article","created":{"date-parts":[[2024,7,6]],"date-time":"2024-07-06T07:01:59Z","timestamp":1720249319000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Soft information acceleration aided subspace suppression MIMO detection"],"prefix":"10.1186","volume":"2024","author":[{"given":"XiaoXiong","family":"Xiong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4922-7762","authenticated-orcid":false,"given":"Chao","family":"Dong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yaohui","family":"Bian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai","family":"Niu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,7,6]]},"reference":[{"issue":"2","key":"2381_CR1","doi-asserted-by":"publisher","first-page":"186","DOI":"10.1109\/MCOM.2014.6736761","volume":"52","author":"EG Larsson","year":"2014","unstructured":"E.G. 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