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Conjugate gradient reuse algorithm using a variable step-size line search

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2 Author(s)
Birkett, A.N. ; Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada ; Goubran, R.A.

A new algorithm is presented which combines the fast conjugate gradient algorithm and the modified variable step-size algorithm with gradient reuse to provide a convergence/tracking performance trade-off. A simplified version of the proposed algorithm is also presented that reuses weight updates to avoid calculating gradients and conjugate directions at every sample n. This simplified algorithm only invokes the conjugate gradient update every Pth sample resulting in an overall complexity reduction by a factor of P as compared to the FCGA. Simulation results are also presented

Published in:

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on  (Volume:4 )

Date of Conference:

9-12 Jun 1997