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1. (WO2018222344) APPARATUS AND METHOD FOR CALIBRATING A RECEIVER WITH A DECISION FEEDBACK EQUALIZER (DFE)

Pub. No.:    WO/2018/222344    International Application No.:    PCT/US2018/031341
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue May 08 01:59:59 CEST 2018
IPC: H04L 7/00
H03K 3/356
H04L 25/03
Applicants: QUALCOMM INCORPORATED
Inventors: CHEN, Minha
Title: APPARATUS AND METHOD FOR CALIBRATING A RECEIVER WITH A DECISION FEEDBACK EQUALIZER (DFE)
Abstract:
Aspects of the disclosure are directed to determining an offset calibration step size of a sample latch. In accordance with one aspect, the disclosure relate to a Decision Feedback Equalizer (DFE) input section including a E sample latch to output a target signal sample; a E sample digital to analog converter coupled to the E sample latch to input a target voltage to the E sample latch; a sample latch to output a signal sample; and a voltage digital to analog converter coupled to the E sample latch and the sample latch to generate a bias voltage, wherein the bias voltage is inputted to the E sample latch and the sample latch. The DFE input section may further include a latch offset decoder to scale the bias voltage and a summing amplifier to receive an analog input waveform to the DFE input section.