I am new to speech and audio processing and have been doing blind system identification, i.e., estimating channel parameters through channel equalisation of a SIMO audio system in the presence of reverbaration.
I keep coming across the term "cross-relation error method". I have tried to look it up on google but I am unable to figure out what this means. I have so far been able to understand that it is used for channel pairs to estimate the channel parameters, however, I haven't found a definition for it to understand it properly.
Here are some references to where I have been finding this term: https://www.researchgate.net/publication/220324521_Cross-Relation-Based_Blind_SIMO_Identifiability_in_the_Presence_of_Near-Common_Zeros_and_Noise
https://www.eurasip.org/Proceedings/Eusipco/Eusipco2011/papers/1569427595.pdf
I would appreciate any guidance on this topic! Thank you in advance!