Title :
A test statistic for sequential identification of co-channel digital signals using a deflation approach
Author :
Hansen, Lars K. ; Xu, Guanghan
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
When sequentially separating a linear combination of co-channel digital signals, it is necessary at each step to test the validity of the currently estimated signal prior to proceeding to extract the next one. We describe a procedure for use with sequential algorithms which uses a deflation-based approach combined with a simple test statistic. The deflation step removes the contributions of the currently identified signals. The simple test statistic takes into account the error terms introduced into the data by the deflation. The method has been successfully applied in an existing sequential estimation algorithms
Keywords :
array signal processing; digital signals; error analysis; error statistics; matrix algebra; sequential estimation; statistical analysis; co-channel digital signals; deflation approach; error terms; sequential algorithms; sequential estimation; sequential identification; signals separation; source separation; test statistic; validity test; Contracts; Demodulation; Electronic equipment testing; Engineering profession; Error analysis; Sequential analysis; Signal processing; Source separation; Statistical analysis; Telephony;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.604609