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A Two-Step Heuristic Algorithm for Minimum-Crosstalk Routing Resource Assignment

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4 Author(s)
Yici Cai ; Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing ; Bin Liu ; Qiang Zhou ; Xianlong Hong

This brief deals with the crosstalk minimization problem in an integrated routing resource assignment stage containing several operations between global routing and detailed routing. A two-step heuristic algorithm consisting of coarse assignment and detailed assignment is proposed. In coarse assignment, shield lines are planned based on the chromatic number of a light coarse coupling graph, and the assignment of segments that are longer than a predefined threshold is solved with semidefinite programming. In detailed assignment, a strategy based on a dynamic priority queue is introduced to mitigate common problems caused by sequential routing. Experimental results on a set of benchmarks show significant reduction in coupling length between sensitive segments compared to a prevalent bipartite-matching-based algorithm

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:53 ,  Issue: 10 )