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In-band full-duplex in hand-held applications: analysis of canceller tuning requirements

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

Original languageEnglish
Title of host publication2018 IEEE Wireless Advanced (WIAD 2018)
Subtitle of host publicationProceedings of a meeting held 26-28 June 2018, London, United Kingdom
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Electronic)9781538654224
ISBN (Print)9781538654231
DateAccepted/In press - 26 Jun 2018
DateE-pub ahead of print - 27 Dec 2018
DatePublished (current) - Feb 2019


This paper investigates the impact of user-antenna interaction on transmit-to-receive (Tx-Rx) isolation in a handheld In-band Full-duplex (IBFD) transceiver. Dynamic antenna measurements which capture the effect of user hand movements at 1900 MHz are incorporated into simulations of a two stage adaptive self-interference canceller, which simulates an electrical balance duplexer and a second stage of digital cancellation with different tracking adaptation rates. Results demonstrate that the dynamic self-interference channel which results from user movement places demanding requirements on the canceller coefficient tracking. Adaptation intervals of the order of tens ofmicroseconds are required to maintain Tx-Rx isolation of the order of 90 dB, calling into question the feasibility of IBFD handheld devices.

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    Accepted author manuscript, 796 KB, PDF document


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