We demonstrate a real-time RF self-interference cancellation scheme for in-band full duplex using an electrical balance duplexer. The balance network in the duplexer has four 8-bit tunable capacitor banks, creating a four dimensional optimization space with over 4 billion settings. We present a particle swarm optimizer that is able to find a close to optimal solution within 1 ms. The goal of this demo is to show a self-interference cancellation scheme for very dynamic environments. More specifically our demo is able to mitigate instantaneous changes in the antenna impedance in order to keep the self-interference below the threshold.
Vermeulen, T, van Liempd, B, Hershberg, B & Pollin, S 2015, Real-time RF self-interference cancellation for in-band full duplex. in 2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN). IEEE, pp. 275-276, 2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), Stockholm, Sweden, 29/09/15. https://doi.org/10.1109/DySPAN.2015.7343915
Vermeulen, T., van Liempd, B., Hershberg, B., & Pollin, S. (2015). Real-time RF self-interference cancellation for in-band full duplex. In 2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) (pp. 275-276). IEEE. https://doi.org/10.1109/DySPAN.2015.7343915
@inproceedings{77a294b4991e4436957e11902d6a0d2f,
title = "Real-time RF self-interference cancellation for in-band full duplex",
abstract = "We demonstrate a real-time RF self-interference cancellation scheme for in-band full duplex using an electrical balance duplexer. The balance network in the duplexer has four 8-bit tunable capacitor banks, creating a four dimensional optimization space with over 4 billion settings. We present a particle swarm optimizer that is able to find a close to optimal solution within 1 ms. The goal of this demo is to show a self-interference cancellation scheme for very dynamic environments. More specifically our demo is able to mitigate instantaneous changes in the antenna impedance in order to keep the self-interference below the threshold.",
keywords = "antennas, interference suppression, multiplexing equipment, particle swarm optimisation, radiofrequency interference, electrical balance duplexer, in-band full-duplex, tunable capacitor banks",
author = "Tom Vermeulen and {van Liempd}, Barend and Benjamin Hershberg and Sofie Pollin",
year = "2015",
month = sep,
day = "29",
doi = "10.1109/DySPAN.2015.7343915",
language = "English",
pages = "275--276",
booktitle = "2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)",
publisher = "IEEE",
note = "2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) ; Conference date: 29-09-2015 Through 02-10-2015",
}