Synthesizing optimal filters for crosstalk-cancellation for high-speed buses

We present practical algorithms for the synthesis of crosstalk cancelling equalizing filters. We examine designs optimized for the traditional l2 metric and introduce an approach based on the l metric. We compare the two approaches for realistic buses with tight wire spacings. We show bandwidth improvements of up to a factor of 2 using crosstalk cancellation when compared with no filtering or independent preemphasis for each wire. Using l optimization, we achieve roughly 50% better performance than the l2 methods. We are aware of only one other published description of crosstalk cancellation for high-performance buses [9]. We believe that our work is the first to show the advantages of l optimization and to consider crosstalk cancellation for more than just nearest neighbours for high-speed buses. Categories and Subject Descriptors B.4.3 [Input/Output and Data Communications]: Interconnections (Subsystems); B.4.4 [Input/Output and Data Communications]: Performance Analysis and Design ...

• Type: Conference
• Year: 2003
• Where: DAC
• Authors: Jihong Ren, Mark R. Greenstreet
• Keywords: Crosstalk Cancellation, DAC 2003, Design Automation, Keywords Buses, Tight Wire Spacings