Performance analysis of adaptive fault tolerant digital filters in the presence of single and multiple coefficient bit errors

It has been shown previously that adaptive filters can be designed with hardware redundancy so they can continue operating effectively after the occurrence of certain types of hardware failures, thereby achieving reliability through a mechanism known as adaptive fault tolerance. This paper examines the capabilities of adaptive fault tolerance in cases of single and multiple stuck-at bit errors in the adaptive filter coefficients, while the non-faulty bits of the coefficients continue to adjust in response to the adaptive algorithm.