Generalized subband decomposition adaptive filters for sparse systems
Signal Processing
A Low Power Algorithm for Sparse System Identification using Cross-Correlation
Journal of VLSI Signal Processing Systems
Detection-guided fast affine projection channel estimator for speech applications
EURASIP Journal on Audio, Speech, and Music Processing
Krylov-proportionate adaptive filtering techniques not limited to sparse systems
IEEE Transactions on Signal Processing
Iterative estimation of sparse and doubly-selective multi-input multi-output (MIMO) channel
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
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We consider the LMS estimation of a channel that may be well approximated by an FIR model with only a few nonzero tap coefficients within a given delay horizon or tap length n. When the number of nonzero tap coefficients m is small compared with the delay horizon n, the performance of the LMS estimator is greatly enhanced when this specific structure is exploited. We propose a consistent algorithm that performs identification of nonzero taps only. The results are illustrated via a simulation study