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DC25_SLIDES_Track07_AnFMBasedSideChannel_ Krotnev.pdf

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1、Information Classification:GeneralWelcome to ConferenceJanuary 2830,2025Santa Clara Convention Center1ExpoJanuary 2930,2025Information Classification:GeneralAn FM Based Side Channel Communication System for Serial Link Training&Background Performance&Power OptimizationDavide Tonietto,(Huawei Technol

2、ogies Canada)Peter Krotnev,Qinghong Du,Andrew Marshall,Davide ToniettoHuawei Technologies Canada2Information Classification:GeneralImageSPEAKERSDavide ToniettoFellow,Huawei Technologies Canadadavide.T|Huawei Fellow,Davide is with Huawei Technology Canada since 2011,he isresponsible for Hisilicon Ser

3、Des IP technology roadmap definition,execution andintegration.His organization provides SerDes for high performance ASICs forapplications in AI,Networking,DC,HPC,Wireless infrastructure and Mobile.He holds more than 20 US patents and co-authored several papers on SerDesand wireline communicationDavi

4、de received the Laurea Degree in Electrical Engineering from PaviaUniversity,Italy in 19963Information Classification:General Background&motivations Goals Current communication systems limitations Fundamentals Implementation Scope&Applications Test Results Forward lookOutline4Information Classificat

5、ion:GeneralBackground&MotivationsSerDes growing power share(BW shipped per year vs.Rate)5Information Classification:General Energy efficiency in serial link is the key objective SerDes efficiency is affected by hundreds of parameters To achieve optimal efficiency and performance:o Initial fine tunin

6、g of SerDes parameterso Background,continuous training of these parameters Optimal tuning o Varies with channel conditionso Varies in timeo Depends on near and far end SerDes parameters (i.e.TX and RX)Optimally achieved only with continuous background communication between near and far endBackground

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1. **技术目标**:提出基于FM调制的串行链路侧信道通信系统,用于SerDes参数的持续优化,提升能效。 2. **核心原理**:通过FSK调制TX时钟(±2-10ppm,带宽kHz级),在现有信号 lane 实现无额外线路的背景通信。 3. **关键优势**: - 协议/编码/信号速率无关,支持PAM4/NRZ,不增加功耗。 - 通过中继器/光模块(如LPO)时SNR仅轻微下降(测试中≤3级中继器影响小)。 - 主信道BER>1E-2或插入损耗>45dB时仍工作,不受抖动影响。 4. **性能数据**: - 通信速率达28kbps,调制幅度≤±10ppm时对主信道性能无影响。 - SNR随信道损耗增加仅当CDR失锁时下降(>45dB)。
**FSK如何优化能效?** **SerDes如何实现无损耗通信?** **后信道技术有何突破?**
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