Method and timing recovery circuit for recovering a sampling clock from a serial data stream encoded using PAM

US12231526B2 · kind B2 · utility

Assignee

• SILICONALLY GMBH · DE

Inventors

• Thomas Hocker · Pittsfield, US
• Sebastian Hoeppner · Dresden, DE

Key dates

• Filing date: Aug 2, 2021
• Grant date: Feb 18, 2025
• Expiry date: Aug 2, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L7/0062
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A method and timing recovery circuit for recovering a sampling clock from a serial data stream encoded using Pulse-Amplitude-Modulation applies a filter pattern decoder to detected symbol sequence at more than two adjacent data symbols, particularly to the detected symbol patterns of four adjacent samples ŷ(k−2), ŷ(k−1), ŷ(k), ŷ(k+1), and calculates an estimated phase error e(k).