A two-level method is proposed in this study for rapidly and accurately computing the line spectrum pair (LSP) frequencies. An efficient decimation-in-degree (DID) algorithm is also proposed in the first level which can transform any symmetric or antisymmetric polynomial with real coefficients into the other polynomials with lower degrees and without any transcendental functions. The DID algorithm not only can avoid prior storage or large calculation of transcendental functions but can also be easily applied towards those fast root-finding methods. In the second level, the Newton-Raphson method is applied. The process of the Newton-Raphson method can be accelerated by adopting a deflation scheme along with the interlacing property of LSP frequencies for selecting the better initial values. A few conventional numerical methods are also implemented to make a comparison with the two-level method. Experimental results indicate that the two-level method is the fastest one.
|出版狀態||Published - 1994 十二月 1|
|事件||Proceedings of the 1994 IEEE Asia-Pacific Conference on Circuits and Systems - Taipei, Taiwan|
持續時間: 1994 十二月 5 → 1994 十二月 8
|Other||Proceedings of the 1994 IEEE Asia-Pacific Conference on Circuits and Systems|
|期間||94-12-05 → 94-12-08|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering