Article
Version 1
Preserved in Portico This version is not peer-reviewed
Efficient Pipeline Conflict Resolution for Layered QC-LDPC Decoders in OFDM-PON
Version 1
: Received: 21 March 2024 / Approved: 22 March 2024 / Online: 22 March 2024 (09:21:08 CET)
A peer-reviewed article of this Preprint also exists.
Wang, Z.; Xu, Z.; Chen, K.; Qu, Y.; Liu, X.; Li, Y.; Zhang, J. Efficient Pipeline Conflict Resolution for Layered QC-LDPC Decoders in OFDM-PON. Photonics 2024, 11, 429. Wang, Z.; Xu, Z.; Chen, K.; Qu, Y.; Liu, X.; Li, Y.; Zhang, J. Efficient Pipeline Conflict Resolution for Layered QC-LDPC Decoders in OFDM-PON. Photonics 2024, 11, 429.
Abstract
Pipeline conflicts arising from data dependencies are a common issue encountered in the hardware implementation of layered QC-LDPC decoders. This paper proposes an efficient layered decoding architecture to reduce pipeline conflicts without introducing stall cycles, by reordering the processing order offline and using the patch method based on variable-to-check message. The experimental results on the LDPC code of the IEEE802.16 standard in the OFDM-PON system demonstrate that the proposed architecture has a sensitivity improvement of 0.125 dBm and 0.375 dBm, respectively, compared with our previous work and the method described in the other work.
Keywords
QC-LDPC; pipeline conflicts; patch method; variable-to-check message; OFDM-PON
Subject
Engineering, Electrical and Electronic Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment