Coded Estimation: Design of Backscatter Array Codes for 3D Orientation Estimation

Mohamad Rida Rammal, Suhas Diggavi, Ashutosh Sabharwal

Research output: Contribution to journalArticlepeer-review


We consider the problem of estimating the orientation of a 3D object with the assistance of configurable backscatter tags. We explore the idea of designing tag response codes to improve the accuracy of orientation estimation. To minimize the difference between the true and estimated orientation, we propose two code design criteria. We also derive a lower bound on the worst-case error using Le Cam’s method and provide simulation results for multiple scenarios including line-of-sight only and multipath, comparing the theoretical bounds to those achieved by the designs.

Original languageEnglish (US)
Pages (from-to)1
Number of pages1
JournalIEEE Transactions on Wireless Communications
StateAccepted/In press - 2023


  • Backscatter
  • Codes
  • Estimation
  • Internet-of-Things
  • Orientation Tracking
  • Reflectivity
  • Response Design
  • RFID tags
  • Symmetric matrices
  • Three-dimensional displays
  • Wireless communication
  • Wireless Sensing

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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