University of Oulu

Tapio, Visa; Alves, Hirley; Juntti, Markku. Joint analog and digital self-interference cancellation and full-duplex system performance. 2017 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2017), March 5-9, 2017, New Orleans, USA, pp. 6553-6557

Joint analog and digital self-interference cancellation and full-duplex system performance

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Author: Tapio, Visa1; Alves, Hirley1; Juntti, Markku1
Organizations: 1Centre for Wireless Communications, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.7 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2017
Publish Date: 2017-06-30


The challenges with full-duplex transceiver (FD) implementation and transmission in small area radio communication systems are introduced. The main challenge in the FD transceiver design is the self-interference (SI). A three-stage SI cancellation is used for SI mitigation. Analog SI isolation is performed at radio frequency (RF) by utilizing an antenna design based on the characteristic modes theory and using active cancellation principle. Phase and attenuation values of the active cancellation signal path are tuned while transmitting a data signal to a distant node. After the tuning the SI isolation at RF is 90 dB. The remaining SI is then cancelled at baseband. For the baseband SI cancellation an estimate of the SI channel is needed. SI channel estimation is done in full-duplex mode and since the receiver has full knowledge of the transmitted signal no extra pilots are used for the SI cancellation.

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Series: Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
ISSN: 1520-6149
ISSN-E: 2379-190X
ISSN-L: 1520-6149
ISBN: 978-1-5090-4117-6
Pages: 6553 - 6557
DOI: 10.1109/ICASSP.2017.7953419
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: Tekes (päätös nro. 40285/14), Nokia Oyj, Esju Oy, CoreHW Oy
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