This paper discusses a fast efficient adaptive filtering algorithm for network echo cancellers PNLMS++ (proportionate normalized least mean squares ++). Compared to the conventional normalized least mean squares (NLMS) algorithm, PNLMSI++ converges much more quickly when the echo path is sparse. When the echo path is dispersive, the convergence rate is the same as NLMS. In addition, the new algorithm diverges at the same rate and to the same misalignment level as NLMS during periods of undetected double-talk. PNLMS++ is only 50% more computationally complex than NLMS and requires no additional memory
S. L. Grant, "An Efficient, Fast Converging Adaptive Filter for Network Echo Cancellation," Conference Record of the 32nd Asilomar Conference on Signals, Systems & Computers, 1998, Institute of Electrical and Electronics Engineers (IEEE), Jan 1998.
The definitive version is available at http://dx.doi.org/10.1109/ACSSC.1998.750893
32nd Asilomar Conference on Signals, Systems & Computers, 1998
Electrical and Computer Engineering
Keywords and Phrases
PNLMS++; Adaptive Filters; Computationally Complex; Convergence of Numerical Methods; Convergence Rate; Echo Path; Echo Suppression; Fast Converging Adaptive Filter; Least Mean Squares Methods; Misalignment Level; Network Echo Cancellers; Proportionate Normalized Least Mean Squares ++
Article - Conference proceedings
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