Hello,
I have a lot of experience in Mentor Graphic expedition and PAD layout. I also have experience with Mentor Hyperlynx.
I work in a big automotive company and had the opportunity to work whit very complicated design, that had 12 layers and used ics like: DDRAM3, GPS, GSM, USB, 1000 pins ARM-cortex and others.
I will like if you can share more information about your design
Regards,
Alex