[802.3_SPEP2P] 答复: Question on 8b10b to PAM4

["zhangtingting (O)" <00001e92abc91102-dmarc-request@xxxxxxxxxxxxxxxxx>]

Hi William,

 

Each PAM4 symbol has two bits (LSB and MSB), which are separately encoded by 8B/10B before the binary symbol mapper instead of the commonly used Gray mapper. In this way, DC components should be well suppressed. Let me know if you have any further questions.

 

 

 

Best wishes,

Tingting

 

发件人: William Lo [mailto:will@xxxxxxxxxx]
发送时间: 2024年1月12日 2:17
收件人: STDS-802-3-SPEP2P@xxxxxxxxxxxxxxxxx
主题: [802.3_SPEP2P] Question on 8b10b to PAM4

 

Hi Tingting,

 

You mentioned in the ad hoc that my assumptions on doing the

8b/10b to PAM4 conversion was incorrect.  I tried using that method

and the PSD near DC didn’t look very good.  Can you show me the

right way to do the conversion.

 

Thanks,

William

 

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