Convergence properties of waveform relaxation circuit simulation methods

Author(s):  
G.D. Gristede ◽  
A.E. Ruehli ◽  
C.A. Zukowski
VLSI Design ◽  
1999 ◽  
Vol 9 (2) ◽  
pp. 213-218 ◽  
Author(s):  
S. E.-D. Habib ◽  
G. J. Al-Karim

This paper reports the development of the Cairo University Waveform Relaxation (CUWORX) simulator. In order to accelerate the convergence of the waveform relaxation (WR) in the presence of logic feedback, CUWORK is initialized via a logic simulator. This logic initialization scheme is shown to be highly effective for digital synchronous circuits. Additionally, this logic initialization scheme preserves fully the multi-rate properties of the WR algorithm.


2011 ◽  
Vol 383-390 ◽  
pp. 2031-2037
Author(s):  
Chun Jung Chen ◽  
Chih Jen Lee ◽  
Chang Lung Tsai ◽  
Allen Y. Chang ◽  
Tien Hao Shih

In this paper, we propose a modified Waveform Relaxation algorithm to perform large-scale circuit simulation for MOSFET circuits containing lossy coupled transmission lines that have been encountered in modern circuit design community, in which a full time-domain transmission line calculation algorithm based on the Method of Characteristic is adopted. New software techniques are proposed to enhance the robustness as well as efficiency of the simulation process. All proposed methods have been implemented and executed to justify the claimed advantages.


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