Proportionate affine projection algorithms for block-sparse system identification

Jianming Liu; Steven L. Grant

ICASSP 2016accepted0 citations

Proportionate affine projection algorithms for block-sparse system identification

Abstract

A new family of block-sparse proportionate affine projection algorithms (BS-PAPA) is proposed to improve the performance for block-sparse systems. This is motivated by the recent block-sparse proportionate normalized least mean square (BS-PNLMS) algorithm. It is demonstrated that the affine projection algorithm (APA), proportionate APA, (PAPA), BS-PNLMS and PNLMS are all special cases of, the proposed BS-PAPA algorithm. Meanwhile, an efficient implementation of the proposed BS-PAPA and block-sparse memory PAPA (BS-MPAPA) are also presented to reduce computational complexity. Simulation results demonstrate that the proposed BS-PAPA and BS-MPAPA algorithms outperform the APA, PAPA and MPAPA algorithms for block-sparse system identification in terms of both faster convergence speed and better tracking ability.

BibTeX

@inproceedings{icassp2016_proportionateaff,
  title = {Proportionate affine projection algorithms for block-sparse system identification},
  author = {Jianming Liu and Steven L. Grant},
  booktitle = {ICASSP 2016},
  year = {2016}
}