An efficient hardware design of an optimal nonstationary filtering system

Authors:
Srdjan Jovanovski;Veselin N. Ivanovic
Affiliations:
University of Montenegro, Dept. of Electrical Engineering, 81000 Podgorica, MONTENEGRO;University of Montenegro, Dept. of Electrical Engineering, 81000 Podgorica, MONTENEGRO
Venue:
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Year:
2009

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Signal Adaptive Pipelined Hardware Design of Time-Varying Optimal Filter for Highly Nonstationary FM Signal Estimation

Journal of Signal Processing Systems

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Abstract

The development of a multi-cycle hardware design of a time-varying (TV) filtering system, suitable for real-time implementation on an integrated chip is outlined in this work. Based on results of time-frequency (TF) analysis and the instantaneous frequency (IF) estimation, the proposed design enables multiple detection of the local filter's region of support (FRS) in the observed time-instant, resulting in the efficient filtering of multicomponent FM signals. The proposed design optimizes critical design performances (such as hardware complexity, energy consumption and hardware cost), making it a suitable system for real-time implementation on a chip. The design has been verified by an FPGA (field-programmable gate array) circuit design.