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Compressive Sensing Photoacoustic Imaging Receiver With Matrix-Vector-Multiplication SAR ADC
本文提出了一种用于可穿戴光声成像设备的压缩感知接收器，通过硬件嵌入压缩感知技术显著降低数据量。
57.5 dB SNDR at 20.41 MS/s, 3.5 nV/(Hz)^1/2 input-referred noise, 5.83 mW/channel
压缩感知光声成像矩阵向量乘法SAR ADC可穿戴设备
▸集成16个模拟前端和4个矩阵向量乘法SAR ADC，实现模拟域高效压缩
▸采用用户可编程三元权重实现被动且精确的矩阵向量乘法
▸支持两种信号重建方法：基于快速迭代收缩阈值算法的优化方法和基于隐式神经表示的学习方法
Abstract
Wearable photoacoustic imaging devices hold great
promise for continuous health monitoring and point-of-care diag-
nostics. However, the large data volume generated by high-density
transducer arrays presents a major challenge for realizing com-
pact and power-e fficient wearable systems. This article presents
a photoacoustic imaging receiver (RX) that embeds compressive
sensing directly into the hardware to address this bottleneck. The
RX integrates 16 AFEs and four matrix-vector-multiplication
(M