Analysis of self-interference cancellation and experimental results of 2×2 MIMO in-band full-duplex radio front-end

Donghyun Lee, Byung Wook Min

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

Abstract

This paper presents experimental results of self-interference cancellation of a 2×2 MIMO in-band full-duplex radio front-end. The proposed RF front-end consists of two rat race coupler and four antennas network, where passive suppression is done, and four self-interference reference generator, where active cancellation is done by making identical signal with residual self-interference signal, then subtracting it from received signal. As every antenna, followed by two rat race couplers, is used for transmitting and receiving simultaneously, MIMO antenna network can be constructed maintaining its own passive suppression. Also, a new type of time delay circuit, having high dynamic range of variable time and wideband performance, is used to be fit to arbitrary residual self-interference, after the passive suppression, and achieve wideband self-interference cancellation. Experimental results show 50-dB self-interference cancellation over 90-MHz, centered at 2.53 GHz.

Original languageEnglish
Title of host publication2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538693582
DOIs
Publication statusPublished - 2019 Sep
Event30th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019 - Istanbul, Turkey
Duration: 2019 Sep 8 → …

Publication series

Name2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019

Conference

Conference30th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019
CountryTurkey
CityIstanbul
Period19/9/8 → …

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Safety, Risk, Reliability and Quality

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    Lee, D., & Min, B. W. (2019). Analysis of self-interference cancellation and experimental results of 2×2 MIMO in-band full-duplex radio front-end. In 2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019 [8880818] (2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC Workshops 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRCW.2019.8880818