Invention Grant
- Patent Title: Mitigating interaction between adaptive equalization and timing recovery in multi-rate receiver
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Application No.: US16125517Application Date: 2018-09-07
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Publication No.: US10404496B1Publication Date: 2019-09-03
- Inventor: Yehuda Azenkot , Georgios Takos , Bart Zeydel
- Applicant: MACOM Technology Solutions Holding, Inc.
- Applicant Address: US MA Lowell
- Assignee: MACOM Technology Solutions Holding, Inc.
- Current Assignee: MACOM Technology Solutions Holding, Inc.
- Current Assignee Address: US MA Lowell
- Main IPC: H04B10/00
- IPC: H04B10/00 ; H04L25/03 ; H04L7/00 ; H04B10/61

Abstract:
A receiver including an equalizer disposed upstream of a decimator and capable of effectively preventing undesirable interaction between equalization adaptation and the overall timing recovery loop in cases of various data rates. The equalizer operates in a full operation rate even in the case of a lower-than-full data rate, e.g., half or quarter data rate. For input analog signal having 1/M of the full data rate (M>1), M or more Center of Filter (COF) values are determine. Each COF may be derived from a function of a respective set of tap weights and compared with a corresponding nominal COF to obtain a COF offset. The resultant COF offsets are used as indications of clock phase correction caused by equalization adaptation to adjust a set of selected tap weights. The taps selected for adjustment encompass at least M samples to correctly indicate the COF offset associate with one symbol.
Public/Granted literature
- US1253867A Valve-assembly remover. Public/Granted day:1918-01-15
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