42.8 Gbit/s PAM-4 data transmission over low-loss electrical backplane

42.8 Gbit/s PAM-4 data transmission over low-loss electrical backplane

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Demonstrated is a record serial transmission rate of 42.8 Gbit/s by sending four-level pulse amplitude modulated (PAM-4) data over a low-loss Megtron 6 electrical backplane. The data is processed and equalised using early–late gate timing recovery and a finite-impulse-response-based least-mean-squares equaliser. Bit error rate performance is reported over several different links.


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    2. 2)
      • Healey, A.: `Challenges and solutions for standards-based serial 10 Gb/s backplane ethernet', Custom Integrated Circuits Conf., September 2007, San Jose, CA, USA, p. 139–144
    3. 3)
    4. 4)
      • Cheng, H., Carusone, A.C.: `A 32/16 Gb/s 4/2-PAM transmitter with PWM pre-Emphasis and 1.2 Vpp per side output swing in 0.13-μm CMOS', Custom Integrated Circuits Conf., September 2008, San Jose, CA, USA, p. 635–638
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      • Synchronization techniques for digital receivers
    8. 8)
      • Adaptive filtering, algorithms and practical implementations
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