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AssigneeOracle International Corporation
InventorsEric Y. Chang, Elad Alon, Frankie Y. Liu
Estimating the term…
An optical receiver includes a feedback circuit that applies a feedback signal to a front-end circuit prior to the front-end circuit converting an optical signal into an analog electrical signal. In particular, the optical receiver includes a digital slicer that determines a digital electrical signal from the analog electrical signal based on a reference voltage that specifies a decision threshold and a clock that specifies sampling times. The feedback circuit determines the feedback signal at least one previous bit preceding a current bit in the analog electrical signal that is provided by the digital slicer and an impulse response of a communication channel. Moreover, the feedback signal has a pulse width that is less than a bit time of the clock. In this way, the optical receiver can cancel post-cursors of the current bit, even when the communication channel includes a low-pass filter.
An optical receiver, comprising:
A system, comprising:
A method for canceling post-cursors of a current bit in an analog electrical signal, comprising:
Dependencies are inferred from the claim text.