Transient Properties of Internal State Initialization Strategies in Reconfigurable Digital Signal Processing Channels

Run-time reconfiguration of digital signal processing systems is common in today´s complex, non-linear and/or time-variant, distributed signal processing and control solutions. Reconfiguration transients caused by the run-time configuration change degrade the quality of service provided by solution, and they may also cause failures in the system. The paper investigates the transient properties of the broadly used one-step reconfiguration method, and compares the transient properties of state preservation and state zeroing for systems implementing reconfigurable IIR type digital filters.