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However, modern signal processing techniques for mmWave hybrid MIMO systems fall short of addressing the performance degradations due to residual transceiver hardware impairments (HIs). This paper thus considers a mmWave hybrid MIMO system with residual HIs. Using Bussgang decomposition, the residual transceiver HIs are modelled as an additive non\u2010Gaussian noise that severely affects the received pilot and information signals, which makes channel state acquisition challenging. In this context of channel\u2010estimation over non\u2010Gaussian noise due to HIs, this work presents a hyperparameter\u2010free maximum Versoria criterion (MVC)\u2010based channel estimation technique. In details, the MVC\u2010based channel\u2010estimator is rendered hyperparameter\u2010free by proposing a sampling rule for its spread parameter  and a gradient descent\u2010based optimisation for its shape parameter . Finally, simulations are presented to show the generalisation and scenario\u2010invariance of the proposed MVC\u2010based channel\u2010estimator. The analytical expression for steady\u2010state misadjustment is also derived and validated by simulations.<\/jats:p>","DOI":"10.1049\/cmu2.70135","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T15:51:26Z","timestamp":1769529086000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Hyperparameter\u2010Free Maximum Versoria Criterion Based Channel\u2010State Acquisition for mmWave Hybrid MIMO With Hardware Impairments"],"prefix":"10.1049","volume":"20","author":[{"given":"Rangeet","family":"Mitra","sequence":"first","affiliation":[{"name":"CMR Institute of Technology Bengaluru Karnataka India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9973-8245","authenticated-orcid":false,"given":"Sandesh","family":"Jain","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering and Center for Autonomous Systems ABV\u2010Indian Institute of Information Technology and Management Gwalior India"}]},{"given":"K.","family":"Venkateswaran","sequence":"additional","affiliation":[{"name":"CMR Institute of Technology Bengaluru Karnataka India"}]},{"given":"Rajat","family":"Kumar","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Indore Indore India"}]},{"given":"Vimal","family":"Bhatia","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Indore Indore India"},{"name":"Skoda Auto University Mlada Boleslav Czech Republic"}]},{"given":"Ondrej","family":"Krejcar","sequence":"additional","affiliation":[{"name":"Faculty of Informatics and Management University of Hradec Kralove Hradec Kralove Czechia"}]}],"member":"265","published-online":{"date-parts":[[2026,1,27]]},"reference":[{"issue":"2","key":"e_1_2_11_2_1","doi-asserted-by":"crossref","first-page":"870","DOI":"10.1109\/COMST.2017.2783541","article-title":"Millimeter\u2010Wave Communications: Physical Channel Models, Design Considerations, Antenna Constructions, and Link\u2010Budget","volume":"20","author":"Hemadeh I. 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