TY - JOUR A1 - Sulimma, Kolja A1 - Kunz, Wolfgang T1 - An exact algorithm for solving difficult detailed routing problems T2 - Proceedings of the 2001 international symposium on Physical design, ISPD’01, April 14, 2001Sonoma, California, S. 198-203 , ISBN: 1-58113-347-2 N2 - Channel routing is an NP-complete problem. Therefore, it is likely that there is no efficient algorithm solving this problem exactly.In this paper, we show that channel routing is a fixed-parameter tractable problem and that we can find a solution in linear time for a fixed channel width.We implemented our approach for the restricted layer model. The algorithm finds an optimal route for channels with up to 13 tracks within minutes or up to 11 tracks within seconds.Such narrow channels occur for example as a leaf problem of hierarchical routers or within standard cell generators. Y1 - 2006 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2884 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-25242 SN - 1-58113-347-2 SP - 198 EP - 203 PB - ACM ER -