ICA-Based Separation and DOA Estimation of Analog Modulated Signals in Multipath Environment

Kunihiko YOKOI  Nozomu HAMADA  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.11   pp.4246-4249
Publication Date: 2005/11/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.11.4246
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Software Defined Radio Technology and Its Applications)
radio surveillance,  multipafh,  ICA,  DOA estimation,  

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The blind separation problem of analog modulated radio signals and their DOA (Direction Of Arrival) estimation problem are considered. These problems are very important in radio surveillance. Based on the idea of Carlos and Takada [1], the following two methods are proposed for an Independent Component Analysis (ICA) based radio surveillance system. The first method is concerned with the improvement of DOA estimation accuracy after signal separation by ICA. Another method treats separation and DOA estimation in multipath environment. The effectiveness of the proposed methods is proved by computer simulation.