Reconfigurable Matched Filtering Using Wideband Margin-Computing Correlators: Applications in Radar and Communication Signal Processing

Kareem Rashed, Aswin Chowdary Undavalli, Shantanu Chakrabartty, Arun Natarajan, Aravind Nagulu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Correlators are fundamental building blocks in radar and communication signal-processing applications. In this paper, a wideband RF correlator based on the margin-computing (MC) paradigm and its applications to radar and communication signal processing are presented. The proposed analog corre-lator replaces traditional multiply-and-accumulate correlators with analog addition-and-thresholding to enable energy-efficient correlation, making it hardware-friendly, scalable, and power-efficient. The prototype IC in 65nm CMOS supports 5GS/s inputs, a large correlation length of 1024, and 8-bit computing accuracy with a high energy efficiency of 152TOPs/J. Measured results of the baseband and direct-RF wavelet processing of impulse radar signatures across varying bandwidths and carrier frequencies are presented. Measured results of code-modulated communication systems with correlator-based signal processing for code-synchronization and code-despreading are also reported.

Original languageEnglish
Title of host publication2024 IEEE 67th International Midwest Symposium on Circuits and Systems, MWSCAS 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages773-777
Number of pages5
ISBN (Electronic)9798350387179
DOIs
StatePublished - 2024
Event67th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2024 - Springfield, United States
Duration: Aug 11 2024Aug 14 2024

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Conference

Conference67th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2024
Country/TerritoryUnited States
CitySpringfield
Period08/11/2408/14/24

Keywords

  • code-domain
  • coherent demodulation
  • correlation
  • inner-product
  • Matched-filters
  • multiplier-free
  • radars

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