Tuning Algorithm to Compensate for Hardware Errors of IBFD Analog Device

Carl W. Morgenstern, Yu Rong, Andrew Herschfelt, Alyosha C. Molnar, Alyssa B. Apsel, David G. Landon, Daniel W. Bliss

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

Abstract

This study investigates processing techniques to alleviate the impact of hardware imperfections for in-band full-duplex (IBFD) systems. The studied IBFD model considers a multi-tap digitally controlled analog filter to provide RF cancellation. With precise optimization, non-negative tap weights reconstruct the multi-path channel to mitigate the self-interference (SI). In our simulation study, the SI cancellation significantly degrades when the initial tap weights are optimized without accounting for the timing errors induced by hardware imperfections. Therefore, we develop a new adaptive algorithm to tune the tap weights and recover the performance degradation caused by the timing errors. Our results indicate that the proposed data-driven method compensates for the timing offsets. Additionally, by considering the finite bit depth of the non-negative tap weights the performance improves compared to when there are no timing errors present.

Original languageEnglish (US)
Title of host publication56th Asilomar Conference on Signals, Systems and Computers, ACSSC 2022
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages1228-1232
Number of pages5
ISBN (Electronic)9781665459068
DOIs
StatePublished - 2022
Externally publishedYes
Event56th Asilomar Conference on Signals, Systems and Computers, ACSSC 2022 - Virtual, Online, United States
Duration: Oct 31 2022Nov 2 2022

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2022-October
ISSN (Print)1058-6393

Conference

Conference56th Asilomar Conference on Signals, Systems and Computers, ACSSC 2022
Country/TerritoryUnited States
CityVirtual, Online
Period10/31/2211/2/22

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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