Electronic Design, Test and Applications, IEEE International Workshop on (2002)
Christchurch, New Zealand
Jan. 29, 2002 to Jan. 31, 2002
Shing Tenqchen , National Taiwan University and Chunghwa Telecom Telecommunication Labs.
Wu-Shiung Feng , Chang Gung University
Bor-Sheng Jeng , Chunghwa Telecom Telecommunication Labs.
Ji-Horn Chang , Chang Gung University
In this paper, we propose a new pipelining extended Givens Rotation Recursive Least Square (PEGR-RLS) architecture using look-ahead technique. The square-root-free forms of QRD-RLS are also difficult to pipeline. The PEGR-RLS algorithm (referred to as Scaled Tangent Rotation, STAR-RLS) is designed such that fine-grain pipelining can be accomplished with little hardware overhead. Similar to STAR-RLS, this algorithm is not exactly orthogonal transformations but tends to become orthogonal asymptotically. This algorithm also preserves the desired properties of the STAR-RLS algorithm. Specifically, it can be pipelined at very low forgetting factor by using extended look-ahead. Simulation results are presented to compare the performance of the STAR-RLS, QRD-RLS, and LMS algorithms.
Shing Tenqchen, Wu-Shiung Feng, Bor-Sheng Jeng, Ji-Horn Chang, "Pipelining Extended Givens Rotation RLS Adaptive Filters", Electronic Design, Test and Applications, IEEE International Workshop on, vol. 00, no. , pp. 466, 2002, doi:10.1109/DELTA.2002.994675