A 50 Mb/s Full HBC TRX with Adaptive DFE and Variable-Interval 3x Oversampling CDR in 28nm CMOS Technology for A 75 cm Body Channel Moving at 0.75 Cycle/sec

ESSCIRC 2022- IEEE 48th European Solid State Circuits Conference (ESSCIRC) Pub Date : 2022-09-19 DOI:10.1109/ESSCIRC55480.2022.9911296

Jaehyun Ko, Iksu Jang, Chanho Kim, Jihoon Park, Changjae Moon, Sooeun Lee, Byungsub Kim

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引用次数: 1

Abstract

This paper reports a 50 Mb/s full human body communication (HBC) transceiver (TRX) that communicates through a 75 cm body channel moving at speed of 0.75 cycle/sec. For the first time, adaptive decision feedback equalization (DFE) and a clock and data recovery (CDR) were integrated in a HBC TRX to adapt to a moving body channel in real time. In the proposed design, the transmitter (TX) consists of inverter-based driver that transmits non-return-to-zero (NRZ) signal to human body. The receiver (RX) utilized a 10-tap adaptive DFE to compensate for time-varying inter symbol interferences (ISIs) of moving body channel. Also, for clock synchronization, variable-interval 3x oversampling CDR (VI-3x-CDR) was adopted to overcome wide and asymmetric data-dependent jitter (DDJ). A test chip was fabricated in 28 nm CMOS technology. Compared with the prior arts that were measured with moving body channel, the data rate and the area were improved by 10x and 3x, respectively.

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基于28nm CMOS技术的具有自适应DFE和变间隔3倍过采样CDR的50 Mb/s全HBC TRX，用于75 cm体通道以0.75周期/秒移动

本文报道了一种50 Mb/s的全身通信(HBC)收发器(TRX)，该收发器通过75厘米的身体通道以0.75周期/秒的速度进行通信。首次将自适应决策反馈均衡(DFE)和时钟和数据恢复(CDR)集成到HBC TRX中，以实时适应移动的身体信道。在该设计中，发射器(TX)由基于逆变器的驱动器组成，该驱动器将非归零(NRZ)信号传输给人体。接收机(RX)利用10抽头自适应DFE来补偿移动体信道的时变码间干扰(ISIs)。在时钟同步方面，采用变间隔3x过采样CDR (VI-3x-CDR)来克服广泛和不对称的数据相关抖动(DDJ)。采用28纳米CMOS工艺制作了测试芯片。与使用移动体通道测量的现有技术相比，数据速率和面积分别提高了10倍和3倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ESSCIRC 2022- IEEE 48th European Solid State Circuits Conference (ESSCIRC)

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