A low-power, reconfigurable adaptive equalizer architecture

This paper presents an architecture for an adaptive equalizer that is dynamically reconfigurable for low-power operation. The equalizer is composed of a signal processing block which accomplishes the filtering operations and a signal monitoring block which controls reconfiguration by monitoring the equalizer performance and dynamically powering up or down filter taps in order to conserve energy. This reconfigurable equalizer is used in the design of a 51.84 Mb/s VDSL receiver core, and simulation results are shown which demonstrate the power savings accomplished through reconfiguration.