Invention Grant
- Patent Title: Signaling compression and decompression associated with a partially unrolled decision feedback equalizer (DFE)
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Application No.: US18142977Application Date: 2023-05-03
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Publication No.: US12294474B2Publication Date: 2025-05-06
- Inventor: Ehud Nir
- Applicant: Cadence Design Systems, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cadence Design Systems, Inc.
- Current Assignee: Cadence Design Systems, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Holland & Knight LLP
- Agent Mark H. Whittenberger
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04L27/06 ; H04L25/49

Abstract:
Technologies for signaling compression inside a partially unrolled decision feedback equalizer (DFE) are described. The signaling compression associated with partially unrolled DFE results in multiplexers selecting a 1-bit output value from one of two 1-bit input values, which are decoding the actual multi-bit candidate levels and transforming the selected 1-bit output value to a multi-bit sliced value by adding to it a pointer value of a pulse-amplitude modulation (PAM) level. The signaling compression reduces the power and area of an N-tap DFE, where N is a positive integer.
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