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Subband adaptive filters (SAFs) are commonly used in high-order adaptive systems. Typically, integer decimated filterbanks are implemented with SAFs due to their ease of design. However, integer subband rates constrain SAFs to perform suboptimally. This research outlines ideas for implementing rationally decimated filterbanks in uniform and non-uniform SAFs while allowing real-time bandwidth adaptation. Rational decimation rates can increase SAF performance and efficiency.
Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on (Volume:2 )
Date of Conference: 24-27 Oct. 1999