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A line code with quick-resynchronization capability and low latency for the optical data links of LHC experiments

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arxiv 2202.04288 v1 pith:KNCDTMYW submitted 2022-02-09 physics.ins-det

Binwei Deng , Mengxun He , Jinghong Chen , Di Guo , Suen Hou , Xiaoting Li , Chonghan Liu , Ping-Kun Teng
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Annie C. Xiang Yang You Jingbo Ye Datao Gong Tiankuan Liu
This is my paper
classification physics.ins-det
keywords codelatencylineopticalbeencapabilitydecoderencoder
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We propose a line code that has fast resynchronization capability and low latency. Both the encoder and decoder have been implemented in FPGAs. The encoder has also been implemented in an ASIC. The latency of the whole optical link (not including the optical fiber) is estimated to be less than 73.9 ns. In the case of radiation-induced link synchronization loss, the decoder can recover the synchronization in 25 ns. The line code will be used in the ATLAS liquid argon calorimeter Phase-I trigger upgrade and can also be potentially used in other LHC experiments.

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