Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind digital tuning

Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind digital tuning

Radio self-interference cancellation has been a technological challenge for more than a century while it is the most critical enabler for full-duplex radios. The eventual success of radio self-interference cancellation may well depend on not only improved hardware technology but also innovative signal processing schemes. In this paper, we present a few latest discoveries on such schemes. The fi...

Analog and Digital Approaches to UWB Narrowband Interference Cancellation

Interference cancellation beamforming robust to pointing errors

The conventional Wiener–Hopf beamformer is subject to substantial performance degradation in the presence of steering vector pointing errors. By removing the effects of the desired signal, the modified Wiener–Hopf beamformer avoids this problem but allows cochannel interferences to pass through in order to maximise the signal-to-noise ratio. In this study, a novel array beamformer is proposed, ...

Adaptive Blind Interference Cancellation in Cdma Systems

Multiuser CDMA communication systems experience multiple access interference as well as multipath distortions and require some interference cancellation scheme at the receiver. While blind multiuser receivers have received considerable attention, adaptive versions are often limited to the no multipath case. In this paper, the receiver’s output variance is minimized subject to appropriate constr...

All-Digital Self-Interference Cancellation Technique for MIMO Full-Duplex Systems

In this paper, the MIMO full-duplex system is proposed to remove self-interference signal using modified DFT based channel estimation technique. In SISO full-duplex systems only single transceiver can transmit data on either side simultaneously whereas in MIMO full-duplex systems multiple transceivers can transmit data simultaneously from both sides. During MIMO full-duplex transmission self-in...