An Enhanced Eye-Opening PAM-4 with Encoding for Short-Reach Wireline Communication Systems

This paper presents a new encoding scheme for PAM-4 signaling with the aim of reducing the inter-symbol interference (ISI) caused due to the bandwidth limited channel. The proposed encoding converts any consecutive identical sym-bols (CIS) in the input data to an alternative transition, which helps...

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Bibliographic Details
Published inConference proceedings : Midwest Symposium on Circuits and Systems pp. 68 - 71
Main Authors Javadi, Ramin, Anand, Tejasvi
Format Conference Proceeding
LanguageEnglish
Published IEEE 11.08.2024
Subjects
Communication channels
Communication systems
Encoding
Eye-Opening
FinFETs
Interference
ISI
PAM-4
Receivers
Symbols
Online AccessGet full text
ISSN1558-3899
DOI10.1109/MWSCAS60917.2024.10658934

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Summary:This paper presents a new encoding scheme for PAM-4 signaling with the aim of reducing the inter-symbol interference (ISI) caused due to the bandwidth limited channel. The proposed encoding converts any consecutive identical sym-bols (CIS) in the input data to an alternative transition, which helps to mitigate inter-symbol interference and results in wider eye opening at the receiver as compared to unencoded PAM-4. Performance of the proposed encoding is validated through transistor level simulations at 56Gb/s using two different pseudo random quaternary sequence (PRQS) data patterns across two communication channels (6dB and 9dB channel loss) in 16nm FinFET technology. Simulations show more than 2\times improve-ment in the vertical and horizontal eye opening with the proposed encoding scheme.
ISSN:1558-3899
DOI:10.1109/MWSCAS60917.2024.10658934