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Signal Process."],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A neighborhood-restricted mixed Gibbs sampling (MGS)-based approach is proposed for low-complexity high-order modulation large-scale multiple-input multiple-output (LS-MIMO) detection. The proposed LS-MIMO detector applies a neighborhood limitation (NL) on the noisy solution from the MGS at a distance<jats:italic>d<\/jats:italic>\u2014 thus, named<jats:italic>d<\/jats:italic>-simplified MGS (<jats:italic>d<\/jats:italic>-sMGS) \u2014 in order to mitigate its impact, which can be harmful when a high-order modulation is considered. Numerical simulation results considering 64-QAM demonstrated that the proposed detection method can substantially improve the MGS algorithm convergence, whereas no extra computational complexity per iteration is required. The proposed<jats:italic>d<\/jats:italic>-sMGS-based detector suitable for high-order modulation LS-MIMO further exhibits improved performance \u00d7 complexity tradeoff when the system loading is high, i.e., when<jats:inline-formula><jats:alternatives><jats:tex-math>$\\frac {K}{N}\\geq 0.75$<\/jats:tex-math><mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mfrac><mml:mrow><mml:mi>K<\/mml:mi><\/mml:mrow><mml:mrow><mml:mi>N<\/mml:mi><\/mml:mrow><\/mml:mfrac><mml:mo>\u2265<\/mml:mo><mml:mn>0.75<\/mml:mn><\/mml:math><\/jats:alternatives><\/jats:inline-formula>. Also, with increasing the number of dimensions, i.e., increasing number of antennas and\/or modulation order, a smaller restriction of 2-sMGS was shown to be a more interesting choice than 1-sMGS.<\/jats:p>","DOI":"10.1186\/s13634-021-00725-7","type":"journal-article","created":{"date-parts":[[2021,9,18]],"date-time":"2021-09-18T19:17:37Z","timestamp":1631992657000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Mitigating the noisy solution impact of mixed Gibbs sampling detector in high-order modulation large-scale MIMO systems"],"prefix":"10.1186","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6675-7856","authenticated-orcid":false,"given":"Alex M.","family":"Mussi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Taufik","family":"Abr\u00e3o","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,9,18]]},"reference":[{"issue":"2","key":"725_CR1","doi-asserted-by":"publisher","first-page":"160","DOI":"10.1109\/JSAC.2013.130205","volume":"31","author":"J. 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