Power and area efficient adaptive equalization

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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Reexamination Certificate

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07471751

ABSTRACT:
Methods, apparatuses, and systems are presented for performing channel equalization comprising receiving a signal from a channel associated with inter-symbol interference, processing the received signal to effectively apply a plurality of linearly independent impulse responses to the received signal to produce a plurality of intermediate signals, scaling each of the intermediate signals by each of a plurality of multiplier factors to produce a plurality of scaled signals, and combining the scaled signals to produce a resulting signal corresponding to an equalized version of the received signal in order to reduce effects of inter-symbol interference. Processing of the received signal may comprise providing the received signal to an LCR network comprising a plurality of inductors and a plurality of capacitors and generating, as the intermediate signals, a plurality of inductor signals representing currents through the plurality of inductors and a plurality of capacitor signals representing voltages across the plurality of capacitors.

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H. Wu et al., “Integrated Transversal Equalizers in High-Speed Fiber-Optic Systems,” IEEE Journal of Solid-State Circuits, vol. 38, No. 12 (Dec. 2003).

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