Parameter tracking of the poly-phase structure adaptive filtering algorithm

The poly-phase structure (PPS) adaptive filter is an alias free structure whose update law obeys least square error minimization. This algorithm, in addition to fast identification of long impulse responses in stationary environment, exhibits remarkable tracking capabilities under adverse input conditions. The performance of PPS is unmatched even by the LMS based algorithms. With its fast transient response, the PPS is ideal for echo cancellation and echo suppression