Title :
A 20Gb/s digitally adaptive equalizer/DFE with blind sampling
Author :
Ying, Yu-Ming ; Liu, Shen-luan
Author_Institution :
Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
As data rates increase, the backplane communication systems suffer from serious inter-symbol interference (ISI). Due to different channel lengths, loss, and environment variations, an adaptive equalizer is an attractive and robust circuit to equalize the received data in high-speed data communications. Several techniques are presented for adaptive equalizers. A spectrum balancing method is presented for an analog equalizer. However, this method is valid only for the random data with fixed data rate. An eye-opening-monitor (EOM) method adopts a two-dimensional map to detect the signal quality. This EOM method needs a synchronous sampling clock and high-speed comparators. It results in high power consumption and furthermore it requires accurate analog circuits.
Keywords :
adaptive equalisers; blind equalisers; decision feedback equalisers; intersymbol interference; DFE; blind sampling; digitally adaptive equalizer; eye-opening-monitor method; intersymbol interference; spectrum balancing method; Adaptive equalizers; Boosting; Clocks; Decision feedback equalizers; Radiation detectors; Synchronization;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-61284-303-2
DOI :
10.1109/ISSCC.2011.5746390