A low delay and fast converging improved proportionate algorithm for sparse system identification
EURASIP Journal on Audio, Speech, and Music Processing
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Frequency domain adaptive filters have gained much attention. Although some work on performance analysis has been reported, there is still much to be done. This paper presents a convergence analysis of the multidelay frequency domain adaptive filter. We show, for the first time, the relationship between the convergence step-size and the convergence rate. The effect of step-size on adaptation accuracy is presented also. Extensive simulation results are provided to support the analysis. Surprisingly, all block processing algorithms run well even though the step-sizes utilized are much bigger than the convergence bounds currently available in the literature.