An Introduction to Spectral Convergence: Challenges and Paths to Solutions

Andrew Herschfelt, Alex R. Chiriyath, Sharanya Srinivas, Daniel W. Bliss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With rapid advances in flexible, software-defined computational architectures and radio front-end technologies, we have an opportunity to improve the efficiency of spectral use, reinforce system reliability, and enable new system capabilities. We deprecate the traditional 'stove-piped' approach towards spectral management in favor of networks of RF, mmWave, and terahertz systems that jointly execute multiple radio functions, including communications; radar; positioning, navigation, and timing (PNT); spectral situational awareness; and opportunistic spectrum access. Such multi-function systems are enabled by a class of waveform, processing, and co-design techniques which we label spectral convergence. In this paper, we review the set of challenges obstructing the integration of such devices into the same spectral region. We briefly survey the current status of the field, outline a taxonomy of solution classes, and recommend paths towards fruitful research. We discuss existing and novel approaches towards enabling multifunction systems in the context of contemporary applications such as automotive networks and satellite meshes. We address the challenges associated with distributed resource optimization in networks of multi-function systems. We apply these concepts to a simple automotive network example and demonstrate the potential of spectral convergence solutions in a basic simulation environment

Original languageEnglish (US)
Title of host publication2021 1st IEEE International Online Symposium on Joint Communications and Sensing, JC and S 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665441070
DOIs
StatePublished - Feb 23 2021
Event1st IEEE International Online Symposium on Joint Communications and Sensing, JC and S 2021 - Dresden, Germany
Duration: Feb 23 2021Feb 24 2021

Publication series

Name2021 1st IEEE International Online Symposium on Joint Communications and Sensing, JC and S 2021

Conference

Conference1st IEEE International Online Symposium on Joint Communications and Sensing, JC and S 2021
CountryGermany
CityDresden
Period2/23/212/24/21

Keywords

  • Cognitive radar
  • Cognitive radio
  • Navigation
  • Position measurement
  • Radar
  • Spectral convergence
  • Spectrum sharing
  • Surveillance
  • Timing
  • Wireless communications

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation

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