caa a22 4500 606205047 CHVBK 20210128101005.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00034-014-9929-8 doi (NATIONALLICENCE)springer-10.1007/s00034-014-9929-8 A Novel Method for Complex-Valued Signals in Independent Component Analysis Framework [Elektronische Daten] [Wei Zhao, Yuehong Shen, Zhigang Yuan, Dawei Liu, Pengcheng Xu, Yimin Wei, Wei Jian, Nan Sha] This paper deals with the separation problem of complex-valued signals in the independent component analysis (ICA) framework, where sources are linearly and instantaneously mixed. Inspired by the recently proposed reference-based contrast criteria based on kurtosis, a new contrast function is put forward by introducing the reference-based scheme to negentropy, based on which a novel fast fixed-point (FastICA) algorithm is proposed. This method is similar in spirit to the classical negentropy-based FastICA algorithm, but differs in the fact that it is much more efficient than the latter in terms of computational speed, which is significantly striking with large number of samples. Furthermore, compared with the kurtosis-based FastICA algorithms, this method is more robust against unexpected outliers, which is particularly obvious when the sample size is small. The local consistent property of this new negentropic contrast function is analyzed in detail, together with the derivation of this novel algorithm presented. Performance analysis and comparison are investigated through computer simulations and realistic experiments, for which a simple wireless communication system with two transmitting and receiving antennas is constructed. Springer Science+Business Media New York, 2014 Independent component analysis nationallicence Reference-based contrast criteria nationallicence Kurtosis nationallicence Negentropy nationallicence FastICA nationallicence Zhao Wei College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Shen Yuehong College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Yuan Zhigang College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Liu Dawei Chongqing Communications Institute, 400035, Chongqing, People's Republic of China aut Xu Pengcheng College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Wei Yimin College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Jian Wei College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Sha Nan College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/6(2015-06-01), 1893-1913 0278-081X 34:6<1893 2015 34 34 https://doi.org/10.1007/s00034-014-9929-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00034-014-9929-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao Wei College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Shen Yuehong College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Yuan Zhigang College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Liu Dawei Chongqing Communications Institute, 400035, Chongqing, People's Republic of China aut NATIONALLICENCE 700 1- Xu Pengcheng College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Wei Yimin College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Jian Wei College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Sha Nan College of Communications Engineering of PLA University of Science and Technology, Houbiaoying Road No.88, Qinhuai District, 210014, Nanjing, People's Republic of China aut NATIONALLICENCE 773 0- Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/6(2015-06-01), 1893-1913 0278-081X 34:6<1893 2015 34 34