Adaptive Fault Tolerance Inherently Included in Bio-Inspired Adaptive Digital Filtering

It is well-known that the Lévy Flight Firefly Algorithm (LFFA) can be effectively applied to IIR adaptive filters designed with conventional second order structures, coupled form structures, and adaptive lattice-ladder structures. Adaptive Fault Tolerant (AFT) digital filters take advantage of non-canonical architectures that use the inherent adaptive process as an automatic fault recovery mechanism. Since the LFFA is based on particle swarm optimization, the swarm provides many additional adaptive parameters. This paper presents results to confirm that the LFFA provides inherent adaptive fault tolerant capabilities which is very important when the LFFA algorithm is applied in adaptive digital filtering applications.