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Resilient flow control for wireless data streaming in inductively coupled medical implants

机译：感应耦合医疗植入物中无线数据流的弹性流控制

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摘要

This paper describes the hardware implementation of a custom communication protocol tailored for low power telemetry data streaming over an inductive link. An efficient transceiver design is achieved by adapting only the essential physical layer features of a typical RFID baseband processor and optimizing the flow control logic for continuous and reliable data transfer. For the external near-field reader, we provide a logical model for receiver operation and suggest a simple forward error correction (FEC) mechanism. The benefit of FEC in the context of developed communication system is demonstrated by simulations, and projections of design scalability are also presented. The proposed communication system was implemented in 28nm CMOS process. Place-and-route (PNR) results occupy only 0.0048 mm(2) of core area, and the transient simulations show a power consumption of 306 nW at 0.5 V supply and a master clock of 845.7 kHz. The implementation provides an uplink rate of 12 kbit/s, sufficient for reliable transmission of a 1-channel 1 kS/s 12-bit sample recording. (C) 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)
机译：本文介绍了定制通信协议的硬件实现，该协议是为通过感应链路的低功耗遥测数据流而量身定制的。通过仅调整典型RFID基带处理器的基本物理层功能并优化流控制逻辑以实现连续而可靠的数据传输，即可实现高效的收发器设计。对于外部近场阅读器，我们提供了用于接收器操作的逻辑模型，并提出了一种简单的前向纠错（FEC）机制。通过仿真演示了FEC在已开发的通信系统中的优势，并提出了设计可扩展性的预测。所提出的通信系统是在28nm CMOS工艺中实现的。布局布线（PNR）结果仅占核心面积的0.0048 mm（2），瞬态仿真显示，在0.5 V电源和845.7 kHz主时钟下的功耗为306 nW。该实现提供了12 kbit / s的上行链路速率，足以实现1通道1 kS / s 12位样本记录的可靠传输。 （C）2019作者。由Elsevier B.V.发布。这是CC BY-NC-ND许可下的开放获取文章。 （http://creativecommons.org/licenses/by-nc-nd/4.0/）

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