公开(公告)号：US10263813B1

公开(公告)日：2019-04-16

申请号：US15988110

申请日：2018-05-24

Applicant: MStar Semiconductor, Inc.

Inventor： Chia-Chun Hung ,  Ting-Nan Cho ,  Kai-Wen Cheng ,  Tai-Lai Tung

IPC: H04L25/03 ,  H04L27/00

Abstract: A signal receiving apparatus includes a phase recovery look, a phase estimation circuit, a phase noise detection circuit, and a bandwidth setting circuit. The phase recovery loop performs a phase recovery process on an input signal according to a bandwidth setting. The phase estimation circuit generates an estimated phase associated with the input signal. The phase noise detection circuit determines a phase noise amount according to the estimated phase. The bandwidth setting circuit calculates an average and a variance of the phase noise amounts, and adjusts the bandwidth setting of the phase recovery loop according to the average and the variance.