LMS estimation via structural detection

作者：John P. Homer, Iven Mareels, Robert R. Bitmead, Bo Wahlberg, Anders Gustafsson · 发表于：IEEE Transactions on Signal Processing · 年份：1998 · DOI：10.1109/78.720368 · 被引用次数：90 · 研究领域：Advanced Adaptive Filtering Techniques、Blind Source Separation Techniques、Advanced Wireless Communication Techniques

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.