Title :
Local stability analysis and systolic implementation of a subspace tracking algorithm
Author :
Xu, Fan ; Willson, Alan N., Jr.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We discuss the DPASTd algorithm for signal subspace tracking. Our analysis shows that, under a sufficient condition on the step size, the DPASTd algorithm is locally stable even though delayed updating is applied. A pipelined realization of the algorithm and the corresponding systolic architecture are also proposed and a method for reciprocal computation is discussed. We also present simulation results to validate the algorithm
Keywords :
numerical stability; pipeline processing; signal processing; systolic arrays; tracking; DPASTd algorithm; delayed updating; local stability analysis; pipelined realization; reciprocal computation; signal subspace tracking; step size; subspace tracking algorithm; systolic architecture; Algorithm design and analysis; Computational modeling; Computer architecture; Cost function; Delay; Direction of arrival estimation; Signal processing algorithms; Space technology; Stability analysis; Sufficient conditions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.940691
