City, University of London Institutional Repository Citation: Gkoktsi, K. and Giaralis, A. ORCID: 0000-0002-2952-1171 (2019). A multi- sensor sub-Nyquist power spectrum blind sampling approach for low-power wireless sensors in operational modal analysis applications. Mechanical Systems and Signal Processing, 116, pp. 879-899. doi: 10.1016/j.ymssp.2018.06.049 This is the accepted version of the paper. This version of the publication may differ from the final published version. Permanent repository link: http://openaccess.city.ac.uk/19969/ Link to published version: http://dx.doi.org/10.1016/j.ymssp.2018.06.049 Copyright and reuse: City Research Online aims to make research outputs of City, University of London available to a wider audience. Copyright and Moral Rights remain with the author(s) and/or copyright holders. URLs from City Research Online may be freely distributed and linked to. City Research Online: http://openaccess.city.ac.uk/ publications@city.ac.uk City Research Online