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Measuring and maintaining consistency: a hybrid FTF algorithm

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Bunch J. R., Le Borne R. C., Proudler I. K.

International Journal of Applied Mathematics and Computer Science

2001

tom 11

nr 5

1203-1216

Due to the versatility as well as its ease of implementation, the Fast Transversal Filters algorithm is attractive for many adaptive filtering applications. However, it is not widely used because of its undesirable tendency to diverge when operating in finite precision arithmetic. To compensate, modifications to the algorithm have been introduced that are either occasional (performed when a predefined condition(s) is violated) or structured as part of the normal update iteration. However, in neither case is any confidence explicitly given that the computed parameters are in fact close to the desired ones. Here, we introduce a time invariant parameter that provides the user with more flexibility in establishing confidence in the consistency of the updated filter parameters. Additionally, we provide evidence through the introduction of a hybrid FTF algorithm that when sufficient time is given prior to catastrophic divergence, the update parameters of the FTF algorithm can be adjusted so that consistency can be acquired and maintained.

Ograniczanie wyników

1 International Journal of Applied Mathematics and Computer Science

1 Bunch J. R.

1 Le Borne R. C.

1 Proudler I. K.

1 2001

Wyniki wyszukiwania

Measuring and maintaining consistency: a hybrid FTF algorithm