A pipelined time-frequency filter implementation

Multiple-clock-cycle pipelined signal adaptive design of an optimal nonstationary filtering system has been considered here. It is based on the real-time results of time-frequency (TF) analysis and on the TF analysis-based instantaneous frequency (IF) estimation. The pipelining technique allows the implemented filter to overlap in execution unconditional steps performing in neighboring TF instants and, consequently, to significantly improve the execution time. In this way, the improvement in execution time corresponding to the one clock cycle by a TF point is achieved, which means that the improvement by a TF point can reach even 50% in a great part of TF plane. The design and its improvement are tested on the multicomponent signals.