A Scalable and Instantaneously Wideband 5GS/s RF Correlator Based on Charge Thresholding Achieving 8-bit ENOB and 152 TOPS/W Compute Efficiency

📋 论文概要

本文提出了一种基于电荷阈值化的可扩展、瞬时宽带5GS/s RF相关器，解决了传统数字相关器功耗高和模拟相关器相关长度短、功耗面积大的问题，实现了8位ENOB和152 TO的性能。

💡 主要创新点

• 采用电荷阈值化技术实现模拟相关运算，避免了ADC的使用，降低了功耗和面积。
• 实现了5GS/s的瞬时宽带采样率和可扩展架构，支持更长的相关长度。

🏷 关键词

📄 原文摘要

Louis, St. Louis, MO 1 2 Correlators are fundamental building blocks in radar/communication signal processing and analog-to-information (A-to-I) applications such as spectrum sensing [1]. Typically, correlation, which is equivalent to an inner (dot) product, is performed using digital multiply-and-accumulate (MAC) operations (Fig. 12.3.1), with power consumption scaling with frequency, compute, and ADC power. Analog correlators eliminate ADCs but suffer from high power/area and/or small correlation lengths (~10 samples) [2,3]. While matrix multiplication in compute-in-memory (CiM) cores can be used for correlation, such blocks typically operate with lower speeds for multi-bit inputs, require new materials/memory IP and DACs and ADCs at the input/output [4,5]. Importantly, the correlation between two signals can be viewed as a pattern-matching

👥 作者与机构

Kareem Rashed1, Aswin Undavalli2, Shantanu Chakrabartty2, Aravind Nagulu2, Arun Natarajan1

Oregon State University, Corvallis, OR Washington University in St