Pipeline implementation of gradient-type adaptive filters
Kiyoshi Nishikawa, Hitoshi Kiya · Electronics and Communications in Japan (Part III Fundamental Electronic Science) · 2001
This paper describes pipeline realization of a gradient-type adaptive filter on the algorithmic level. By pipeline realization, the longest path (critical path) of the filter can be reduced so that the throughput characteristic can be improved. In addition, the reduction of the critical path relaxes the restriction on the operators to be used and the power consumption can be decreased. Evaluation criteria of the pipeline realization are throughput, convergence, latency, and computational complexity. Using the delayed LMS adaptive filter as one of the gradient-type adaptive filters, it is shown that pipeline realization is possible that not only has a high throughput but also convergence and latency identical to those in the LMS adaptive filter taking into account the hardware complexity. © 2001 Scripta Technica, Electron Comm Jpn Pt 3, 84(5): 33–42, 2001