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Real-time RF self-interference cancellation for in-band full duplex Host Publication: 2015 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Authors: T. Vermeulen, B. Van Liempd, B. Hershberg and S. Pollin Publisher: IEEE Publication Date: Sep. 2015 Number of Pages: 2
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.
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